Question

Which of these does NOT explain why humans and other mammals breathe through lungs, unlike amphibians and other animals that take in oxygen through simple diffusion?

A. Large animals need more oxygen than small ones.
B. Oxygen can only pass through a constantly wet membrane.
C. Mammals have fewer cells than other types of animals.
D. Warm-blooded animals need a lot of oxygen to regulate their body temperatures.​

Answer 1

B

Step-by-step explanation:

it is so due to osmosis because molecules of oxygen can move through a semi permeable membrane or a permeable membrane and wet membrane is an example

Answer 2

Answer: B

Explanation: Frogs have a moist, permeable skin, which can transfer gasses such as carbon dioxide and oxygen. Humans have dry skin that is impermeable to gas exchange, so almost all gas exchange takes place in the lungs. This means human lungs must be more efficient than frog lungs