Which trait is found in early embryos of both birds and humans, but then disappears from each during development?

soft

shell

scales

tail

gill slits

How many mammal species exist today?

Which long-term environmental change could allow some organisms to flourish? drought ice age tsunami large asteroid impact

How do humans perceive the world they live in, and how does this differ from other mammals?

If two genes are linked, what does that mean about their physical loca- tion on chromosomes?

Most human pathogens are weak outside of the body and die in a hostile environment. they survive outside the body only in areas that accommodate their survival needs. pneumonia is a disease of the lungs.

Why do you think an ice cube feels cold when you hold it?

A dermatome represents the motor innervation of muscles in that area. a dermatome represents the motor innervation of muscles in that area. a. True b. False

The largest stars known could contain over Suns. OA) 1,000 OB) 100,000 OC) 1,000,000 D) 1,000,000,000

A founding population of lizards arrives on a island. Which type of isolation would likely result in this population becoming a new species

A living thing that does not makes its own food