Question 4 of 10
What percentage of the air is found in the bottom two layers of the Earth's
atmosphere?
A. 1%
B. 29%
C. 99%
D. 49%
SUBMIT
Need ASAP

Answers

Answer 1

Answer: 99%

Explanation:

The troposphere itself contains 99% of air.

Answer 2
The atmosphere is 99% air

Related Questions

Give 2 advantages that mammals have over reptiles. Explain.

Answers

Answer:

warm-bloodedness is the main one

Explanation:

Answer:

1) Being warm-blooded gives mammals a distinct advantage in habitats

2) Mammals are important members of food chains and food webs, as grazers and predators.

3) Mammals meet people's needs by serving as pets, transport, food, or research subjects.

4) Mammals also interact with other species in many symbiotic relationships.

Amino acids build

A. proteins

B. monomers

C. nucleic acids

Answers

Answer:

A. proteins

Explanation:

Amino acids builds up the proteins.

Cellular respiration definition ?

Answers

Answer:

cellular Respiration is that cells use oxygen in mitochondria to make ATP and GTP for cells

Answer:

Cellular respiration occurs when cells utilize oxygen in their mitochondria to produce ATP and GTP.

Cellular respiration is a series of reactions that occur under aerobic conditions and result in the production of large amounts of ATP.

Explanation:

Glucose, the basic building block for starch and many sugars are one of the main sources of energy in our diet. Its oxidation can be divided into three phases in the respiration of the cells: glycolysis, the cancer cycle, and the electron transport system.

Aerobic breathing uses eukaryotes to generate energy, including all multicellular organisms and some single-cell organisms. Aerobic breathing uses oxygen – a powerful, in-kind electron acceptor.

Aerobic breathing is an extraordinarily effective process that enables eukaryotes to have complicated life and active lifestyles. It also means however that they need a continuous supply of oxygen or that they cannot get the energy to stay alive.

Other forms of respiration, which are slightly less efficient, can be used by procharian organizations such as bacteria and archaebacteria. They can therefore live in environments in which eukaryotic organisms cannot live because they do not need oxygen.

Scientists recently discovered that three different types of squid, a marine animal, previously thought to be three different species, were actually all members of one species. Their earlier ideas were based on using squid carcasses (dead bodies). The new, more accepted classification is most probably based on an analysis of
A. a greater number of squid carcasses
B. the feeding habits of the three different species
C. a number of newly found squid fossils
D. the DNA present in the cells of squid

Answers

Answer:

D: The DNA present in the cells of the squid.


Which three statements are true about the energy flow in an ecosystem?

Answers

Answer:

main source of energy for an ecosystem is the sun producers convert radiant energy to chemical energy the maximum amount of biomass is at the lowest trophic level

Answer:

A,B and E

Explanation: hope it helps you :)

Highlight all the atoms of the four functional groups, but do not highlight any bonds. When you click on each atom, it will change color. To deselect an atom, click on it again. Before you submit, check that you have not selected any bonds.

Answers

Hi. You did not submit any image, table or description of a molecule for the functional groups to be pointed out. This makes it impossible for your question to be answered. However, I will try to help you as best I can.

A functional group is a set of atoms of different chemical elements that take the place of a hydrogen atom that was part of a hydrocarbon (it is a molecule composed of carbon and hydrogen atoms). The most common functional group is −OH, but you also often encounter −SH, −NH2, and −OPO2−3 functional groups.

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How did the drought most likely affect populations of grasshoppers living in the grassland ecosystems? Choose the correct answer.

A. The insects adapted to eat other available foods instead of grass.

B. Populations increased because other insects were eliminated from the environment. C. Populations decreased because the resources the grasshoppers needed were not available.

D. Populations of grasshoppers were not affected because the size of a population cannot change over time.
I need help

Answers

Answer:c

Explanation:

99% of the GMOs on the planet are ____
or ____

Answers

Answer:

The answer would be pesticide producers and herbicide resisters.

Explanation:

Hope this helped!

The hypothesis that whales evolved from land-dwelling ancestors is supported by __________. ANSWER Unselected molecular comparisons of whales and fish Unselected historical accounts of walking whales Unselected the ability of captive whales to be trained to walk Unselected fossils of extinct whales that had increasingly reduced hind limbs Unselected evidence from the current biogeographic distribution of whales Unselected I DON'T KNOW YET

Answers

Answer:

The answer is "Third choice".

Explanation:

Fossils are a great source of evidence about whales' forebears. It demonstrates, for instance, that a land mammal lived 50 million to 700 years ago. Whales evolved from such marine residents were thought by scientists. Scientists. This and more cells from a fossil can be said, so the concept that whales evolved from ancestors of land is reinforced by an extinct whale which has shortened the hind limbs evermore.

which of the samples shown below are photosynthetic

Answers

Option B. Samples ACD Are photosynthetic

What does it mean to be photosynthetic

To be photosynthetic means to possess the ability to carry out photosynthesis, a vital process in which organisms, typically plants, algae, and some bacteria, use sunlight, carbon dioxide, and water to synthesize organic compounds, particularly glucose, and release oxygen as a byproduct.

Photosynthesis occurs in specialized cell structures called chloroplasts, which contain chlorophyll and other pigments that capture light energy. These pigments absorb light, primarily in the visible spectrum, and convert it into chemical energy through a series of biochemical reactions.

Read more on photosynthesis here:https://brainly.com/question/13763348

#SPJ1

In the plasma membrane, the phospholipid heads Group of answer choices are hydrophilic and face inward, shielded from water. are hydrophobic and face outward toward the aqueous solution on both sides of the membrane. are hydrophobic and face inward, shielded from water. are hydrophilic and face outward toward the aqueous solution on both sides of the membrane.

Answers

Answer:

are hydrophilic and face outward toward the aqueous solution on both sides of the membrane

Explanation:

The plasma membrane is structurally made up of a phospholipid bilayer, which is amphipathic in natire. This means that the phospholipid layer of the plasma membrane consists of phosphate head that is water loving or hydrophilic in nature and a lipid tail that is water fearing or hydrophobic in nature.

Since the phosphate head is HYDROPHILIC, they face outward toward the aqueous (water) solution on both sides of the membrane. This allows the phosphate head to attract water molecules.

All of the species of sugar maple trees (Acer saccharum) found in the [town] make up a:
1. population
2. community
3. ecosystem
4. biome

Answers

Answer:biome

Explanation:

Because biome means where they are from

Answer:

C

I think it's correct unless any objections

Describe movement of molecules to maintain a healthy cell environment. Explain in details

Answers

Answer:

Very necessary for its survival.

Explanation:

Movement of molecules is very important to maintain a healthy cell environment because some molecules are required by the cell for its growth and development. Some molecules moves inside the cell environment through a semi-permeable membrane such as glucose, oxygen, potassium etc while on the other hand, some molecules are removed from the cell which are waste materials such as carbondioxide etc. If these waste materials are not removed from the cell, it greatly damaged the cell.

Which algebraic property could be used to rewrite 3x ⋅ (7y ⋅ 4) as (3x ⋅ 7y) ⋅ 4?
Associative Property of Addition
Associative Property of Multiplication
Commutative Property of Addition
Commutative Property of Multiplication

Answers

Answer:

Associative property of Addition

Explanation:

In an algebra to form an equation we add

Answer:

Associative property of Addition

Explanation:

In an algebra to form an equation we add

In which process are the homologous chromosomes separated?

A. Meiosis

B. Mitosis

Answers

Answer:

A. Meiosis

Explanation:

Since Meiosis is the process of separating homologous chromosomes way from each other while Mitosis don't the answer will be A. Meiosis

Hope this helps!

Answer:

A. Meiosis

Explanation:

Meiosis is the process, in which the homologous chromosomes separated. So, option (A) is correct answer.

Crossing-over takes place between...
A. sister chromatids

B. analogous chromosomes

C. homologous chromosomes

Answers

Answer:

C. homologous chromosomes

Explanation:

Crossing over occurs between prophase I and metaphase I and is the process where two homologous non-sister chromatids pair up with each other and exchange different segments of genetic material to form two recombinant chromosome sister chromatids.

Answer:

C. homologous chromosomes

Explanation:

Crossing-over takes place between homologous chromosomes.

A sample of human tissue has just been delivered to your evidence room for a crime scene


What type of tissue is this?


Please help will mark BRAINLIEST and make sure to explain!!

Answers

Odd question as there is multiple types of tissue that could be tested. Is there any additional information for the question?

Most likely though, it’s epithelial tissue.
The plates keep rubbing so it would be the equator

Which part of the neuron below is indicated by the arrow, and what is its function?
The long section of a neuron that includes structures that wrap around the neuron are indicated by the arrow.

- The myelin sheath releases neurotransmitters so that electrical impulses can be transferred.
- The myelin sheath protects and transmits electrical impulses faster.
- The node of Ranvier transmits electrical impulses faster.
- The node of Ranvier transfers information across a gap.

Answers

Answer:

the arrow points to an axon

Explanation:

Each neuron in your brain has one long cable that snakes away from the main part of the cell. This cable, several times thinner than a human hair, is called an axon, and it is where electrical impulses from the neuron travel away to be received by other neurons.

Answer:

B: The myelin sheath protects and transmits electrical impulses faster.

Explanation:

i just took the test and its B

1: Which two parts of the taxa do we use to name organisms?
2: List and describe each of the three Domains.
3 List and describe the four kingdoms in the Eukarya Domain. ​

Answers

2.) list and describe each of the three domains

PLEASE HELP! I ALREADY HAVE A BAD GRADE IN THIS CLASS!!

Complete the following sentence.
A turf management professional seeking advancement may choose to get certification through a
____________-_____________ program offered by a university as part of its continuing education options.

Answers

Answer:

the government since it needs to go through the government for a unversity

Explanation:

Answer:

NON-DEGREE

Explanation:

BECAUSE i TOOK THE TEST

5. What process happens when rocks break down due to reaction with water,
carbon dioxide, oxygen and organic acids?
A. Biological Engineering
B. Chemical Engineering
C. Electrical Engineering
D. Mechanical Engineering
If your score is
sted by the ever
4- 5 Very good! You may still read the module but you are already
knowledgeable with the topics that we are to discuss.
2-3 Good! Go over the items that you find difficult and then you may proceed
to the lessons in this module that you don't understand. .
to​

Answers

Answer:

Chemical engineering

Explanation: I am not really that good at science but my opinion is that it is chemical engineering because the process of the rock breaking down with the listed factors of water, carbon dioxide etc. If you are not sure you can also look of the definition for each of the engineering factors...

PLEASE HELP! WILL MARK BRANLIEST! The amount of carbon today is the exact amount that has always been on Earth. T or F

Answers

Answer:

True

Explanation:

I dont know if this is correct but I looked it up I hope this helps! Have a great day!

Answer is True

This article is about carbon and how it moves around our planet. Carbon is the fourth most abundant element in the universe and the basic building block for all life. Carbon atoms are everywhere – the stone we walk on, the CO2 our bodies produce and release into the air, the backbone of polymers, and most importantly, carbon is the foundation of all life.

The total amount of carbon on the earth is essentially constant. Imagine a log of wood inside of a large sealed metal box filled with air. Weigh the entire box and its contents. Now cut the log up until it is just a pile of sawdust. Weigh the box again – it has the same weight. Now burn the sawdust inside until all that is left is a pile of ash inside a smoke filled box. Weigh the box again. The weight is the same as before.

Check this one:

https://andrewbellay.com/carbon-cycle/


Mark Brainliest please

Adrenergic receptors Select one: a. can be activated by the release of epinephrine. b. have two structural forms - muscarinic and nicotinic. c. when activated stimulate skeletal muscles to contract. d. can be found in both the sympathetic and parasympathetic divisions. e. are activated by the release of acetylcholine.

Answers

Answer:

The correct answer is  a. can be activated by the release of epinephrine.

Explanation:

Epinephrine is a hormone and neurotransmitter naturally secreted by the body through the adrenal glands, synthesized and stored in the adrenal medulla and released into the systemic circulation. Epinephrine is a non-selective adrenergic agonist, stimulating alpha1-, alpha2, beta1, and beta2-adrenergic receptors. The systemic actions of catecholamines are mediated by the binding of these compounds to plasma membrane receptors, of the GPCR type widely distributed throughout the body and known as adrenergic receptors, which are activated by the catecholamines adrenaline (epinephrine) and noradrenaline . These receptors cause different effects depending on the G protein subtypes to which they are associated and the signal transduction mechanism linked to the specific G protein.

explain how ionic balance is maintained in the human body​

Answers

Answer:

ion balance is maintain in the body by its ph balance

The ozone destroying pollutants primarily comes from air conditioner coolants, refrigerator coolant, aerosol spray, and plastic foam. *
true

false

Answers

Answer:

true

Explanation:

Chlorofluorocarbons or CFCs are the main cause of ozone layer depletion. These are released by solvents, spray aerosols, refrigerators, air-conditioners, etc. The molecules of chlorofluorocarbons in the stratosphere are broken down by the ultraviolet radiations and release chlorine atoms.

What is the most significant challenge for organisms that live in estuaries?
O A. Changing nutrient levels
O B. Changing water temperatures
O C. Changing water depth
O D. Changing water salinity
SUBMIT
(FOR TEST HELPPPP N HURRYYYY PLEASE!!!)

Answers

Answer:

D

Explanation:

sorry replied late buh it's better to know for the future l guess

What do I write need help

Answers

planet's temperatures which is one main thing about global warming. Like greenhouse, sun's warmth in a planet's lower atmosphere get's trapped. Caused by the presence of water vapour, carbon dioxide, methane, and a lot of other certain gases that are in the air. (greenhouse effect )

Way's to help:

1. Use less energy

2. Changing the way you eat can help (healthy)

3. CARS! There is always something about doing different transpiration  that help ( I don't really get that?)

5. Cleaning - Recycling/Throwing away trash

- You can look up very simple ways to help the earth if you aren't old enough to do some of the bigger options when trying to make a change.

Molecules on the outer surface of a microorganism act as____

Answers

Molecules on the outer surface of a microorganisms act as immunostimulants

Sorry if I spelt that wrong

The immunostimulants act as those molecules that are found on the outer surface of the microforms.

What are microsorgams ?

The microorganisms are those organisms that can only be seen through the microscope and include the bacteria, the protozoa, the algae, and the fungi.

The virus is not considerd to be living and has a single cell or may form a colony of cells. The unseen microbial life is scripted in the 6th century BC. As these microorganisms have a single-celled life they are more diverse.

The presence of the immunostimulants on the body of the micro organs tells about the outer surface of these microorganisms.

Find out more information about the microorganism.

brainly.com/question/8695285

What is the genotype of an organism?

A. The genotype is the DNA sequences of this gene on a homologous pair of chromosomes.

B. How the genes are expressed resulting in the physical appearance of the organism.

Answers

Answer:A. The genotype is the DNA sequences of this gene on a homologous pair of chromosomes.

Explanation:

A. The genotype is the DNA sequences of this gene on a homologous pair of chromosomes.

what is the all year round climate present in the philipines

Answers

The average year-round temperature measured from all the weather stations in the Philippines, except Baguio, is 26.6 °C (79.9 °F). Cooler days are usually felt in the month of January with temperature averaging at 25.5 °C (77.9 °F) and the warmest days, in the month of May with a mean of 28.3 °C (82.9 °F).

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How many solutions are there to the following equation?2- 5x= 3(2 3x)A. OB. 1C. Infinitely many Sabrina is tracking the growth rates of a colony of ants and of a bee hive. From her research, she has developed a function to represent the population growth of each type of insect, where y represents the population and x represents the number of weeks since Sabrina began her research.What is this function written in vertex form? I can't find the surface area loln=3.14 Suppose that you are able to sequence a portion of Dr. Ogden's genome. The DNA sequence below is a stretch of one of the genes. TAC CGT ATA AAA AAT TAA CTT AGA CGT GCT CTT TCT CTT CGA GAA GAC ATA TTA CTT CGT TGA ATCGiven the DNA sequence above type the mRNA processed transcript (assume that TCT CTT CGA GAA GAC ATA is an intron). In a class of students, the following data table summarizes how many students have a cat or dog. What is the probability that a student chosen randomly from the class has a cat? Determine if the two triangles are congruent. If they are, State how you know. NO LINKS!!!!! Show work please. Part 3c 10 - 5 2/3 = ? i need this for math when a plant is not strong enough to support its own weight what is most likely the problem Given F(x) = 2x - 1; G(x) = 3x + 2; and H(x) = x 2, find the function F(x) + G(x) + H(x). 15. Which sentence uses the correct order of adjectives?Oa. My brother rode a beautiful big black Friesian horse in the parade.Ob. My brother rode a beautiful Friesian big black horse in the parade.O c. My brother rode a big, black, beautiful Friesian horse in the parade Customers at a restaurant can build their own burrito by choosing one item from each category shown in the table. What connotation does the word frantic have?o desperationO tensionO nervousnessO confusion 31 x 01111111111111111111111111 Caio comprou uma lembrancinha para todos os seus amigos e gastou R$12,50. Qual frao pode representar esse valor? 125/2 25/5 125/5 25/2 Me ajuda Sanjay uses the steps below to solve the equation 4 p + two-fifths (10 + 2 p) = 8. Step 1 Multiply both sides of the equation by Five-halves. 4 p + 10 + 2 p = 20 Step 2 Simplify like terms. 6 p + 10 = 20 Step 3 Subtract 10 on both sides of the equation. 6 p = 10 Step 4 Divide both sides of the equation by 6. p = StartFraction 10 over 6 EndFraction = Five-thirds = 1 and two-thirds Which is the first error that Sanjay made when finding the solution? Use pascal triangle to expand and simplify (5x+4y) The exploration of the mid-Cayman rise is intended to discover _______. a. what life may have been like before the evolution of photosynthesis b. the origins of photosynthesis c. life in shallow, coastal regions d. the chemical composition of undersea mountains Please select the best answer from the choices provided A B C D Translate to an algebraic expression. The difference of five times a number and two what are examples of soluble salts (metal+acids) A farmer finds that if she plants 55 trees per acre, each tree will yield 25 bushels of fruit. She estimates that for each additional tree planted per acre, the yield of each tree will decrease by 4 bushels. How many trees should she plant per acre to maximize her harvest