Which of the following poses the greatest risk for species extinction?

a.

expansion of human cities

b.

increased levels of pollution

c.

intense hurricane activity

d.

UV radiation and the hole in the ozone layer

Why are multicell organisms considered complex

What is the function of the alpha-globin gene found on chromosome 16 of humans? a). codes for 1 of the 2 types of subunits from which hemoglobin is made. b). codes for enzyme that causes cells to form a globular mass of the body energy c).

Resumo do filme : um professor adoravel

Which spiders are the deadliest

Even in an adult, some cells continue to divide. Why is cell division useful even in an adult who is no longer growing?

Which organism's are omnivores? A) The snake, the bear, and the fish B) The fish and the eagle C) The bear and the fish D) The snake and the mouse If an omnivore is an animal that eats both plants and animals, I'd choose D because all the other

How are all humans similar?

Why does earth have such a diversity of plant and animal life? give three reasons.

After sequencing a molecule of dna, you discover that 20% of the bases are cytosine. what percentage of the bases would you expect to be thymine? explain why.

Kidneys that can conserve water are essential to homeostasis because: a) some animals live in dry or salty environments. b) some animals drink water.