Answer: Hairlessness and Glands
explanation:Another notable similarity between the two groups is minimal hair. Both hippos and whales possess barely any hair on their bodies. They do not have sweat glands, either. These are both characteristics that can assist them in their aquatic lifestyles.
I feel like the answer would be A because photosynthesis gives off energy and they don’t produce glucose
I believe it’s your head since it has more friction
The introduction of foreign species can cause a rapid decline of a native species
A. presence increases potassium concentration in the blood