3. A certain atom has an atomic number of four. How many protons does it have?

A 8

B 4

C2

DO

Which of the following terms represents the movement of individuals into or out of an area? A. mutations B. gene flow C. natural selection D. non-random mating E. natural selection

Genetic data suggests many frog species that live in Madagascar and India share a common ancestor that lived on the India-Madagascar landmass.

Which of these is NOT a product of cellular respiration? a. ATP b. water c. glucose d. carbon dioxide

What is a patient paying if $500 must be paid in order to receive insurance

Expand the squared binomial. (x - 3) ^2

What are the levels or organization in biology?

In what grade do you take biology I took it in 6th grade, just wondering

What type of mutations do scientists look for in a molecular clock

What is the Law of Conservation of Energy? Question 10 options: Energy cannot be created, but can be destroyed as it transforms. Energy can be created and destroyed as it converts to other forms.

In humans, brown eyes are dominant to blue eyes. if a blue-eyed man has children with a brown-eyed woman whose mother has blue eyes, what percentage of the brown-eyed offspring do you expect will be heterozygous?