Q: Q: The process in which the nucleus divides is called what? A:

OPTIONS:
- meiosis
- epistasis
- cytokinesis
- mitosis

A: mitosis

input: OPTIONS:
- mass migration
- metamorphosis
- spontaneous mutations
- by changing their density Now, answer this question: Q: How do some animals change their depth? A:
A:
output: by changing their density

Q: Green algae and land plants are closely what? A:

OPTIONS:
- unrelated
- foreign
- different
- related

Answer: related

Problem: OPTIONS:
- abdominis
- Duodenum
- vas
- epididymis
Q: Q: The spermatids are transported from the testes to where? A:
Answer: epididymis

Problem:OPTIONS:
- hard shell
- brain
- skeleton
- backbone

Q: One of the main features all vetebrates have in common is what? A:
****
A: backbone

Problem:OPTIONS:
- oxygen, nitrogen, H20
- nitrogen, argon, hydrogen
- argon, oxygen, hydrogen
- nitrogen, oxygen and argon

Q: What are the three most common elements in the air we breathe? A:
****
A:
nitrogen, oxygen and argon