Answer:
Just as the organs in an organ system work together to accomplish their task, so the different organ systems also cooperate to keep the body running. For example, the respiratory system and the circulatory system work closely together to deliver oxygen to cells and to get rid of the carbon dioxide the cells produce.
Explanation:
A soccer player kicks a ball. Which of the following describes the reaction force to this kick?
A. friction between the ball and the foot
B. friction between the ball and the ground
C. force applied to the ground by the foot
D. force applied to the foot by the ball
Answer: D. force applied to the foot by the ball.
Explanation:
The basic premise of force is that for every action, there is a reaction. The reaction force is the force that pushes back so to speak, against the action that you initiated.
This reaction force by acting against us, ensures that we move forward by pushing us.
When the player struck the ball, the ball pushed back against the player and this force that was applied to the foot by the ball was the reaction force.
3
How did scientists determine Earth has layers?
OA. through the use of earthquake waves
OB.
through deep core drilling
Oc. through x-ray analysis
OD. through the use of magnetometers
Reset
Next
Answer:
The correct answer is - A. through the use of earthquake waves.
Explanation:
The interior of the earth can not be studied or seen by digging the hole, for that scientist normally use the movement of seismic waves, from earthquakes or nuclear test explosions, are reflected, slow down, sped up bent by passing through the different layers.
Waves behave differently as they move in different layers and their material helps scientists to learn and study the layers and their constituents. It explains that the Earth's interior has a series of concentric shells, with a thin outer crust, a mantle, a liquid outer core, and a solid inner core.
using the terms homologous and analogous, identify which group of structure provides evidence for a common ancestor. explain
Answer:
Homologous structures.
Explanation:
Homologous structures provide evidence for common ancestry because the organs are similar in position, structure, and evolutionary origin in homologous but different in their function, while on the other hand, the analogous structures indicates that similar pressures on organisms can produce similar adaptations among organisms. so we can say that homologous structure provides evidence for a common ancestor of different organisms.
List and describe three of the five characteristics of life. * help pls i give 50 points
Answer:
Order, Sensitivity and response to stimuli, Reproduction, Growth and developement, Regulation, Homeostasis. Hope that helps!
Reproduction is the process in making more of the same species. we won't get into that. Order is the food chain, and what the animal kingdom should cisist of. In sensitivity and response to stimuli, organisms respond to diverse stimuli. For example, plants can bend toward a source of light, climb on fences and walls, or respond to touch. Regulation is kinda like the ability to adapt. Animals come from all over, so they need to adapt to the climate, resources, and other animals around.
I NEEEEEEDDDDDD HEEEEELLPPPPPPP
Answer:
Homeostasis
Explanation:
Homeostasis is the process which maintains the temperature level of our body.
body cell wall consisting of two germ layers
a rocket is fired straight upward from ground level with an initial velocity of 480Km)hr. After t second , its distance above the ground level is given by 480t-16t^2. For what time interval is the rocket more than 3200Km above ground level?
Answer:
answer
Explanation:
The rocket is 19.5 m above the ground when h=19h=19:
h19.50tttamp;=−8t2+32tamp;=−8t2+32tamp;=−8t2+32t−19.5amp;=−32±322−4(−8)(−19.5)−−−−−−−−−−−−−−−−√2(−8)amp;=−32±1024−624−−−−−−−−−√−16amp;=−32±400−−−√−16amp;=−32±20−16amp;=−32+20−16=0.75amp;=−32−20−16=3.25amp;amp;amp;amp;amp;amp;amp;amp;Substitute h=19.amp;Subtract 19.5 on both sides.amp;Solve for t using the Quadratic Formula.amp;Simplify.amp;Subtract.amp;Evaluate the root.amp;Find the two solutions.
h
19.5
0
t
t
t
amp;=−8t
2
+32t
amp;=−8t
2
+32t
amp;=−8t
2
+32t−19.5
amp;=
2(−8)
−32±
32
2
−4(−8)(−19.5)
amp;=
−16
−32±
1024−624
amp;=
−16
−32±
400
amp;=
−16
−32±20
amp;=
−16
−32+20
=0.75
amp;=
−16
−32−20
=3.25
amp;
amp;
amp;
amp;
amp;
amp;
amp;
amp;Substitute h=19.
amp;Subtract 19.5 on both sides.
amp;Solve for t using the Quadratic Formula.
amp;Simplify.
amp;Subtract.
amp;Evaluate the root.
amp;Find the two solutions.
The rocket will then be at least 19.5 m above the ground for the interval 0.75≤t≤3.25
0.75≤t≤3.25
The time interval for which the rocket is more than 3200 km above the ground level is 61.25 seconds.
What is quadratic equation?To solve this problem, we need to find the time interval for which the rocket's distance above the ground level is greater than 3200 km.
We can start by setting the equation for the rocket's distance above the ground level equal to 3200:
We can then solve this equation for t using the quadratic formula
[tex]480t - 16t^2 = 3200\\t = (-480 +/- sqrt(480^2 - 4*(-16)*3200)) / (-32)\\This simplifies to:\\t = (-480 +/- sqrt(480^2 + 256000)) /\\ (-32)t = (-480 +/- sqrt(2304000)) /\\ (-32)t = (-480 +/- 1500) / (-32)t = (-1980) /\\(-32)t = 61.25t = -24.25\pi[/tex]
Since the time interval we are looking for is positive, we can ignore the negative solution. The time interval for which the rocket is more than 3200 km above the ground level is therefore 61.25 seconds.
Learn more about quadratic equation, here:
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VERY EASY! URGENT NEED HELP FAST! ILL GIVE BRAINLIEST AND LIKE! HURRY PLEASE
Answer:
Its B
Explanation:
Questions: Answer these before color-coding the reverse side of this page.
1. Why are the chromosomes paired up?
Answer: Chromosome pairing refers to the lengthwise alignment of homologous chromosomes at the prophase stage of meiosis. ... For these organisms to produce cells with a single set of chromosomes, the sets have to be separated such that the daughter cells have one copy of each chromosome. The 22 pairs of homologous chromosomes contain the same genes but code for different traits in their allelic forms since one was inherited from the mother and one from the father. So humans have two homologous chromosome sets in each cell, meaning humans are diploid organisms.
Explanation:
Earth’s largest ecosystems are the?
Answer:
The World Ocean
Explanation:
The World Ocean is the largest existing ecosystem on our planet. Covering over 71% of the Earth's surface, it's a source of livelihood for over 3 billion people.
^Hope this helps, Hazel^The following diagram represents the reaction of methane with oxygen gas to form carbon dioxide and water.
The chemical reaction shown above takes place in a closed system. What is true about the system while the reaction occurs?
A.
The total number of particles in the system increases.
B.
The total number of particles in the system decreases.
C.
The total mass of the particles in the system stays the same.
D.
The total mass of the particles in the system increases.
no middle schooler awnser my questions
Answer:
C.
The total mass of the particles in the system stays the same. sorry if i am wrong
Explanation:
what are density dependent limiting factors? provide examples and describe how they affect a population.
Answer:
china world was large puplation of ther country and dencity was multiple
Answer:
Density-dependent factors include disease, competition, and predation. Density-dependant factors can have either a positive or a negative correlation to population size. With a positive relationship, these limiting factors increase with the size of the population and limit growth as population size increases.
Which statement best distinguishes aerobic from anaerobic respiration?
A. Only aerobic respiration involves fermentation.
B. Only anaerobic respiration occurs in the mitochondria.
C. Only aerobic respiration requires oxygen.
D. Only anaerobic respiration produces carbon dioxide.
Answer:
C. Aerobic respiration
Explanation:
Aerobic respiration occurs when oxygen is present
Anaerobic respiration occurs in the absence of oxygen. Anaerobic respiration is usually associated with fermentation process (eg Alchohol production)
The main difference between aerobic and anaerobic respiration is that aerobic respiration needs oxygen to occur, while anaerobic respiration does not. Option C. Only aerobic respiration requires oxygen.
What is cellular respiration?
Aerobic and anaerobic respiration occurrence depends on the presence or absence of oxygen. Option C. Only aerobic respiration requires oxygen.
Cellular respiration follows two ways, which depend on the presence or absence of oxygen, and both of them begin with the process of glycolysis, which occurs in the cytoplasm and does not need oxygen to occur.
What is Aerobic Respiration?This type of respiration occurs in the presence of free oxygen. It involves a series of reactions by which pyruvic acid (product of glycolysis) turns into CO₂ and H₂O, producing many ATP molecules.
Aerobic Respiration occurs in mitochondria, and takes place in two steps or stages: Krebs cycle and electron transporter chain.
Glycolysis and Krebs cycle produce electrons. These electrons then travel along the electron transporter chain while releasing energy, and ATP is produced.
What is Anaerobic Respiration?This is the type of respiration that occurs in the absence of free oxygen.
It is also a series of reactions by which the cell produces 2 ATP molecules by using pyruvate (product of glycolysis).
Anaerobic respiration can occur in two ways: lactic fermentation and alcoholic fermentation.
Lactic fermentation produces lactic acid and 2 ATPAlcoholic fermentation occurs in two steps, and the final products are ethylic alcohol, 2ATP, and 2 CO₂The whole anaerobic process occurs outside the mitochondria.
Options:
A). Only aerobic respiration involves fermentation. FALSE.
Anaerobic respiration involves fermentation.
B). Only anaerobic respiration occurs in the mitochondria. FALSE.
Aerobic respiration occcurs in mitochondria and anaerobic respiration occurs in the cytoplasm.
C). Only aerobic respiration requires oxygen. TRUE
Anaerobic respiration does not need oxygen.
D). Only anaerobic respiration produces carbon dioxide. FALSE
Alcoholic fermentation produces CO₂ too.
The correct option is C. Only aerobic respiration requires oxygen.
You can learn more about aerobic and anaerobic cellular respiration at
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Where is the cerebellum located in the brain?
Answer:
The cerebellum (back of brain) is located at the back of the head. Its function is to coordinate voluntary muscle movements and to maintain posture, balance, and equilibrium.
Explanation:
- Eijiro <3
Answer:
The cerebellum (back of brain) is located at the back of the head. Its function is to coordinate voluntary muscle movements and to maintain posture, balance, and equilibrium.
Explanation:
HELP!!!! 50PTS!!!! WILL MARK BRAINLIEST!!!
A certain reaction is endothermic in the forward direction. The reaction has less moles of gas on the product side. Which of the following stresses would increase the yield of the products (shift right)? (4 points)
Increasing the volume
Decreasing the pressure
Increasing the temperature.
Decreasing the reactant concentration
Help!!!!!!!!!!!!!!!!
Answer:
I think is C
Explanation:
Albinism is a lack of what protein ?
Answer: Tyrosinase
Explanation: It's an enzyme that contains melatonin.
help please!!!!! i need help!!
What must happen for a hypothesis to become a theory?
A. It must be well-tested and have supported results every time.
B. All possible alternative hypotheses must be tested first.
C. A hypothesis must be published and tested by scientists for a decade before it is a theory.
D. A theory is developed only after a hypothesis has been refuted and changed.
Answer:
A.it must be well-tested and have supported results every time
Answer:
Explanation:b
What is DNA, Example of DNA, Why is DNA important to our life
Answer:
DNA is pivotal to our growth, reproduction, and health. It contains the instructions necessary for your cells to produce proteins that affect many different processes and functions in your body. Because DNA is so important, damage or mutations can sometimes contribute to the development of disease.
Short for deoxyribonucleic acid. The nucleic acid that is the genetic material determining the makeup of all living cells and many viruses. ... An example of DNA is the chain of basic materials in the chromosomes of the human cell.
Explanation:
brainliest?
13. What are the immunisation programmes available at the nearest health centre in your locality?
Answer:
Explanation:
This is because immunization programmes are programmes organised by the government to prevent some certain diseases by boosting our immune system to prevent them through vaccines.
Theses programmes for infants include DPT, measles, poliomyelitis, BCG and MMR.
(ii) For childre include TT, small pox, DTTyphoid, and TAB.
(iii) For pregnant woman it include TT and hepatitis-B.
plzzz helpppp!!!! and answer the question
Answer:
DNA is being transcribed into mRNA
Explanation:
what do birds short necks help them to do? pls help :/
Explanation:
Most diving birds have (relatively) long necks and shorts legs, although their necks aren't as long as say herons, storks or egrets. Take the common loon for instance. Their necks can be up to half as long as their bodies but their legs are so short and set so far back that they are very awkward on land.
Answer: they can extend it out and twist their head around so easy
Explanation:
answer quickly!!
True or False: Organisms which find themselves in an environment which exceeds the upper or lower tolerance limits will die.
Answer:
true
Explanation:
Answer:
this is true there is limits to what animals can do
once an animal loses there homeostasis is usually when they die ;)
Explanation:
Describe two ways in which RNA differs from DNA.
Answer:
RNA contains the sugar ribose, while DNA contains sugar deoxyribose type of ribose that lacks one oxygen atom) RNA has the nucleobase uracil while DNA contains thymine.
Explanation:
RNA- Sugar ribose, nucleobase uracil
DNA - Sugar deoxyribose, thymine
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The clownfish is tasty to larger ocean fish. It hides from predators in its habitat, the sea anemones. Anemones are relatives of the jellyfish; they have stinging tentacles. The clownfish secretes a sticky coating that protects it from getting stung while its food crumbs fall onto and feed the anemone. What type of relationship do the clownfish and sea anemone exhibit?
A. commensalism
B. parasitism
C. mutualism
D. predation
100 points
I do not get this at all any help would be nice
Assignment
Calorie Counting and Expenditure Exploration
Total Score: ____ of 30 points
Instructions: Use the data table that shows the estimation of the daily resting energy expenditure (REE) to explore how calorie requirements change as a person gets older. Follow the steps to calculate the REE for a person over time. Record your calculations in the table.
Decide to calculate the REE for a male or female.
Choose an adult weight.
Calculate the REE for the adult from age 18-29, 30-60, and over 60. Assume the adult maintains the same body weight at each age.
(Score for Question 1: ___ of 1 point)
Male or female
Answer:
(Score for Question 2: ___ of 1 point)
Weight
Answer:
Table
(Score for Table: ___ of 18 points)
Use the Table of the Estimation of the Daily Resting Energy Expenditure (REE) to determine the calculation used for each age range.
Age Range
Calculation from Table
Resting Caloric Expenditure
18-29
30-60
60+
Questions
(Score for Question 1: ___ of 5 points)
How does the REE change as a person ages?
Answer:
(Score for Question 2: ___ of 5 points)
What do these results indicate about how the body's metabolism changes over time?
Answer:
The way the REE changes how a person ages is through the reduction in fat-free mass.
What is resting energy expenditure?This refers to the metabolism of the body that occurs when the body is at rest, due to homeostasis and biological equilibrium.
Hence, other factors that can lead to the aging process of a person based on this resting energy expenditure (REE) are the decrease in muscle mass, in relation to FFM and also the decrease in tissue metabolic rates.
Read more about metabolism here:
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help please !! it’s due in 20 mins &’ i need help. only answer if you know <3
Answer:ohh i think for elk its low but in past it was high and willow tree on past was less now it is more
Explanation:
2) Choose the best answer.
An organelle where amino acids are joined to make proteins is a ___________.
A. cytoskeleton
B. lysosome
C. mitochondria
D. vacuole
E. ribosome
3) Choose the best answer.
The ________ provides structure and support to the cell.
A. vacuole
B. cytoplasm
C. cytoskeleton
D. lysosome
E. mitochondria
4) Choose the best answer.
An organelle which is involved in photosynthesis is the _________.
A. chloroplast
B. vacuole
C. cytoskeleton
D. ribosome
E. lysosome
Explanation:
2) E) ribosome .
3) c) cytoskeleton: The cytoskeleton is a series of fibers made from proteins. It provides structure to the cell and gives it its shape it its shape.
4) a) chloroplast
Which of the following is not a consequence of lack of conservation?
A)
cost of additional wastewater treatment facilities
B)
water contamination from overirigation
C)
availability of land for use
D)
destruction of wildlife habitats
Answer:
C. ) availability of land for use
Explanation:
Not conserving water would not increase the amount of land available for use