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scoray [572]
3 years ago
6

BRAINIEST!!

Biology
2 answers:
qwelly [4]3 years ago
5 0
<span> a ball sitting on a shelf EASY BAE
love you</span>
scoundrel [369]3 years ago
3 0
<span>a bird flying from a tree</span>
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How do peppered moths after the Industrial Revolution show the process of natural selection?
Klio2033 [76]
Industrial revolution produced pollution, which became the reason of black pepper moth. When time passed, they became more suitable by the process of natural selection.

hope this helps!
5 0
3 years ago
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Jon likes hiking. He observes that whenever he hikes up a hill he breathes heavier than when he is on flat ground. Which 2 state
Alekssandra [29.7K]

Answer:

-Sensors in the brain detect a lack of oxygen.

-The muscles in his body need more energy and therefore more oxygen.

Explanation:

-Sensors in the brain detect a lack of oxygen.

-The muscles in his body need more energy and therefore more oxygen.

-The body has too little carbon dioxide to maintain function.

-The body is using carbon dioxide instead of oxygen to make energy.

-Blood pressure has decreased, so less blood is being pumped to the muscles.

<em>The correct answer would be that </em><em>sensors in the brain detect a lack of oxygen</em><em> and t</em><em>he muscles in the body of Jon need more energy and therefore, more oxygen.</em>

At sea level, the atmospheric pressure easily allow oxygen to permeate the cells of the lung and diffuse into the blood. At high altitudes, air pressure is generally lower and permeation/diffusion through the cells of the lung into the blood becomes difficult.

<u>Without adequate oxygen, the body cannot generate energy needed for physical activities of muscles. Consequently, the sensors in the brain detect a lack of oxygen and the body system reacts by breathing heavily to compensate for the oxygen shortage.</u>

6 0
3 years ago
How much energy is produced by each type of macromolecule
german
<span>The amount of energy you'll get from carbohydrate, protein and fat is measured in calories per gram. Fats have the most energy and proteins have the same amount as carbohydrates, but their value as a source of energy is determined by more than the calories gained from one gram. Other factors, such as your activity level and diet, impact which macronutrient is used for energy.</span>
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Ammonia is a gas made of one atom of nitrogen and three atoms of hydrogen bonded together. Therefore, ammonia is ?
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Its considered a compound 
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Why must the number of chromosomes in the sperm and egg be half the number of chromosomes in the other cells of an organism?
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when fertilization takes place, the half of the chromosomes from the egg combine with the half of the chromosomes from the sperm to form a full 23 pairs of chromosomes which contain the genes of the offspring.

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