Answers
Answer:b) The air at high altitudes are less dense, so its harder to breathe.
Explanation:
AS altitude increases, the air pressure drops. This reduces the amount of gas molecules in the air so the air becomes less dense compared to air closer to sea level.
Related Questions
What is necessary for the process of active transport to occur
Answers
Answer:
THE use of energy (usually in the form of ATP) is necessary for the process of active transport to occur.
Energy in form of ATP is necessary for the process of active transport to occur.
WHAT IS ACTIVE TRANSPORT:Active transport is the type of transport that involves the movement of molecules with the aid of energy (ATP). Active transport uses energy to move molecules against a concentration gradient unlike passive transport.Therefore, this means that energy in form of ATP is necessary for the process of active transport to occur.
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glycogen synthase is an enzyme important for making glycogen. in response to glucagon, glycogen synthase is
Answers
Caroline set up a fourth test tube that contained a leaf and was exposed to dim
light.
After two hours the colour of the indicator solution in this test tube remained orange.
Explain why.
(hydrogen carbonate indicator test)
Answers
Answer:
Answer
+ 5.0
Answer: The NEGATIVE CONTROL is the
test tube that is filled with ONLY distilled
water.
Explanation:
A negative control of an experiment is
carried out alongside the main primary
experiment except that the treatment is
changed to something that is predicted
to have no result. In the negative
control, the student does not expect any
response. This would help the student
compare the result of a new experiment
against an already known existing results.
Analysing the experiment carried out
by the student, She filled two test tubes
with distilled water and placed a piece
of Elodea in one of the tubes, leaving
the other without a plant. The other test
tube that contains only distilled water is
the negative control because she wasn't
expecting any result from it. It's also
served as a control sample to the primary
experiment. This is observed as she
blew in each tube to add carbon dioxide,
which caused the distilled water to
become more acidic. This would help the
student know that the that experimental
results are valid and to ensure that time is
saved
In which biome(s) are fawnsfoot mussels found??
Answers
Answer:
The fawnsfoot is found in the Mississippi drainage and the St. Lawrence
Most of the aerobic respiration of a cell takes place in which structure?
A chloroplast
B lysosome
C vacuole
D mitochondria
Answers
what does it mean for a bacteria or protist to be photosynthetic?
Answers
Photosynthetic protists such as the various types of algae contain plastids. These organelles serve as the site of photosynthesis (the process of harvesting sunlight to produce nutrients in the form of carbohydrates). The plastids of some protists are similar to those of plants.
Mark as Brainliest Answer
An estuary is _______.
For environmental science plz helpp
Answers
Answer:
A
Explanation:
Answer:
a partially enclosed coastal body of water (usually at the mouth of a river) where fresh water from the river and salt water from the sea mix.
Explanation:
what are the 2 parts of the central nervous system
Answers
Answer:
brain and spinal cord.
Explanation:
The two parts of the central nervous system are the brain and the spinal cord.
HELP ME ASAP
A stray dog is brought into Destiny's clinic. The poor thing is eaten up with fleas, and she can see that it has terrible sores on its stomach. After giving the dog topical medication to kill the fleas, she also prescribes antibiotics to kill the bacteria in the sores. Which sentence BEST explains how these bacteriI were able to infect the poor dog?
A. The bacteria were epiparasites that were living inside the fleas and then transferred to the dog when the fleas bit him.
B. The bacteria were left behind when the fleas hatched from their eggs and embedded into the dog's skin.
C. The fleas' bites caused itching, leading the dog to scratch the skin and break the surface, providing a home for bacteria.
D. The antibiotics are being given to kill the bacteria, which is the larval stage of the fleas.
Answers
Please help, i'm failing biology and REALLY need honest answers.
( DNA unit test, unit 6 lesson 13. CONNEXUS )
How are new viruses made?(1 point)
A. asexual reproduction
B. sexual reproduction
C. viral DNA or RNA copied by viral cells
D. viral DNA or RNA copied by a host cell
Answers
Answer: i’m pretty sure it’s C
Explanation:
Please mark as brainlest so I can rank up
Which cells can form ATP by breaking down glucose?
a
Prokaryotes only
b
Plants only
c
All cells
d
Animals only
Answers
Answer:
C.) All cells
Explanation:
because energy needs plants as well as animals including prokaryotic cell
if you visit the beach on a hot summer day you will probably feel a Sea Breeze coming off the water onto the land. Which of the following causes this sea breeze?
A. The water is warmer than the land during the day.
B. Hurricanes that form in the oceans blow air into the shore.
C. During the day,solar radiation warms the land faster than the water.
D. Earth is tilted toward the Sun, causing air to move inland from the water
Answers
If I am correct, the answer is supposed to be C due to on hotter portions of the day, land warms much faster than the water. This causes cooler air to rise from the oceans and the wind currents then push the air towards the land.
What types of cells perform photosynthesis?
a
All prokaryotic
b
All animals
c
All eukaryotic
d
All plants
Answers
Answer:
All plants
Explanation:
This is due to the presence of chorophlly . the green colouring pigment in plants
plssss mark brainliest
The network of connective tissue fibers which pass through the tissues of the body and allow for the efficient movement of immune system cells is the
Answers
Answer:
reticuloendothelial system
Explanation:
The reticuloendothelial system (RES) is a heterogeneous population of phagocytic cells in systemically fixed tissues that play an important role in the clearance of particles and soluble substances in the circulation and tissues, and forms part of the immune system.
help me please it's hard
Answers
Answer:
4. predator
5. prey
6. interspecific
Answer:
predator, prey, intraspecific
Explanation:
Which of the following molecules are needed for photosynthesis?
a
carbon dioxide and oxygen
b
water and carbon dioxide
c
glucose and oxygen
d
light and oxygen
Answers
Answer:
A is correct.
Explanation:
Answer:
b is correct
Explanation:
b water and co2
what is the main function of the cell wall in a plant cell
Answers
Answer: provides tensile strength and protection against mechanical and osmotic stress
Explanation:
which is the only kind of bird that has no eyeballs?
Answers
When a dark blue fish and a light blue fish with dark blue fins were mated , all offspring became dark blue. What could also be seen was that part of the offspring got light gray fins.Explain with the help of genetics why all fish turn dark blue.
Answers
Answer:
The allele for dark blue fish must be dominant and the dark blue parent fish must be homo-zygous dominant;
This would mean the dominant allele would necessarily be inherited by all offspring and since it is dominant, it would be expressed over the other allele (light blue fish)
what is supplemental health insurance for elders called?
Answers
Answer: Medigap
Explanation:
Scientists are examining different sea floor structures like those in the model of the Earth's crust below.
The distance between X and Y represents thousands of kilometers of distance on Earth. The scientists notice that the rocks located at point X are older than the rocks located at point Y. What does this information about the age of the rocks indicate to the scientists?
A.
There is an underwater volcano producing new rock at point X.
B.
The sea floor is moving from Y to X over the course of millions of years.
C.
New rock is constantly covering old rock on the ocean floor.
D.
The sea floor is moving from X to Y over the course of millions of years.
Answers
Answer:
C.) The sea floor is moving from Y to X over the course of millions of years.
Explanation:
what will happen if the relative humidity is 100 percent, and the temperature begins falling?
Answers
Answer:
It will start to rain.
Explanation:
What type of food was discovered to make up the majority of the diet of human foragers (and, by extension, likely our ancient ancestors)
Answers
Plant foods such as nuts, fruits and roots was discovered to make up the majority of the diet of human foragers. Hominine ancestors depended on foraging.
Hominine ancestors (i.e., before the evolution of H. sapiens), depended on foraging for millions of years.
Foraging refers to the search for wild food resources, which are provided by nature by gathering different sources (e.g., plants, small animals, birds, insects, etc).
Nuts, fruits and roots represent excellent sources of food because they contain both macronutrients (lipids, proteins and carbohydrates) and micronutrients (i.e., minerals and vitamins).
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Explain why burning of candle is both reversible and irreversible change ?
Answers
when you burn a candle you can always take the melted wax once it resolidifies and make a new candle out of it, but it will never be the same candle
i hope this is helps at least a little :]
On average, men have a basal metabolic rate (BMR) of 1.0 kilocalorie per kilogram per hour. Lawrence weighs 198 pounds. Calculate how much energy Lawrence expends for basal metabolism per day.
Answers
The energy Lawrence expends for basal metabolism per day is 2,160 kilocalories per day.
Basal metabolic rate is defined as the amount of energy that is used when an individual is at rest.
This energy is used for life sustaining functions such as:
breathing,circulation,nutrient processing andcell production.To calculate the Basal Metabolic Rate for Mr Lawrence,
Lawrence weight = 198 pounds
60
(convert pounds to kilogramme)
1 pound = 0.453592kg
198 pounds = x
xkg = 0.453592 × 198
= 89.8 kg
But BMR for average men = 1 kilocalorie per kilogram per hour.
That is, 1 kilocalories = 1 kg per hour
x kilocalories = 89.8 per day
Therefore for a day = 89.8 × 24 ( 24 hours = 1 day)
= 2155.469184
approximately. = 2,160kilocalories per day
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What are three characteristics of alveolus? <3
Answers
2.They have moist, thin walls (just one cell thick)
3.They have a lot of tiny blood vessels called capillaries.
WILL GIVE BRAINLIEST IF CORRECT PLEASE I NEED HELP!
Answers
Answer:
CBADE
Explanation:
The fault has an intrusion (D), and the oldest layers are on the bottom.
Spindle fibers begin to form.
Answers
Answer: Yes that is true but you gave basically NO information at all.
Explanation:
Answer:
yes that that that that Tish that that
explain the correlation between solar radiation and kelp biomass.
Answers
Given what we know, we can confirm that although sunlight is beneficial to plant growth, intense solar radiation has been proven to be detrimental to the survival of kelp, thus reducing its biomass.
How does solar radiation affect kelp?Solar radiation is not harmful in very low amounts.
However, when exposed at long intervals or high intensity, it has been shown to cause tissue damage.
This tissue damage will inhibit the kelp's ability to undergo photosynthesis.
This means it will not be able to grow, and its biomass will be reduced.
Therefore, given the effect of solar radiation in damaging the kelp's ability to photosynthesize and thus reducing its growth, we can confirm that intense or prolonged exposure to solar radiation reduces kelp biomass.
To learn more about photosynthesis visit:
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which abiotic factor starts the phosphorus cycle?
Answers
Answer:
Phosphorus moves in a cycle through rocks, water, soil and sediments and organisms. Over time, rain and weathering cause rocks to release phosphate ions and other minerals. This inorganic phosphate is then distributed in soils and water.