A characteristic that helps an animal survive is called an adaptation.
Let's take a frog, for example.
It has strong leg muscles to be able to jump out of the water, snatch prey, and return quickly. It has cameoflague to hide itself from predators and sometimes even poison. It has a see-through eyelid of sorts that acts like goggles to let it see underwater and still keep debris out of its eye...et cetera.
Answer:
Hemoglobin transfers oxygen from the lung to the muscles, brain, and other organs, and also helps the body to convert carbohydrates and fat into energy.
The answer would be D. The definition of a homologous structure is an organ or body part that appears in different animals and is similar in structure and location, but doesn't necessarily share the same purpose. The birds and rabbits have similar bones in their forelimbs, but one uses them to run and other uses them to fly.
Answer:
It would definitely be A
Hope this helps and have a good day
Answer:
In wells Scientist measure dissolved oxygen, or DO (pronounced dee-oh).