Describe how the sun is able to stay in one piece in spite of what happens at the core.

How many neutrons does element x have if it's atomic number is 22 and it's mass number is 75?

Can green eye parents produce a child with brown eyes?

Why do we see different phases of the lunar cycle? As the moon rotates around its axis, different sides of it become visible, As Earth rotates around its axis, people can see different sides of the moon.

The gradient of a stream depends on its A. bank level B. stream channel C. base level D. speed

What is the best description of the evolution of camouflage by natural selection?

A cricket has a diploid genome of 1.2 billion base pairs. Assume that there are about 200,000 individuals in the population and that the mutation rate is one per 100 million base pairs.

When two or more atoms are chemically bound together, they are called

What converts nitrogen into a usable substance during the nitrogen cycle? A. Consumers B. Decomposers C. leaches D. Nitrogen fixing bacteria

What organism performs all life processes in one cell

19. Pneumonia is A. a bacterial infection. B. a viral infection. C. not treatable. D. an upper respiratory infection.