Problem: OPTIONS:
- ova
- nitrogen
- sperm
- pollen
Q: Q: Fertilization occurs when what material from one flower reaches the female gametes in the same or a different flower? A:
Answer: pollen

Problem:OPTIONS:
- kinetic repulsions
- toxic repulsion
- evaporation repulsions
- electrostatic repulsions

Q: What normally prevent a positively charged particle from colliding and reacting with a positively charged nucleus, but may be overcome by kinetic energy?. A:
****
A: electrostatic repulsions

Q: In an environment, symbiosis, competition, and relying on other organisms for food are examples of what? A:
OPTIONS:
- collaboration
- commensalism
- adaptation
- interaction
interaction

Q: The tails of the hale-bopp comet point away from the sun, evidence that light has what property of motion? A:
OPTIONS:
- inertia
- velocity
- acceleration
- momentum

Answer: momentum

Question: Q: The contents of which organ are mixed every 20 seconds? A:
OPTIONS:
- the metabolism
- pancreas
- kidney
- the stomach
Answer: the stomach

input: OPTIONS:
- air
- oil
- gas
- water Now, answer this question: Q: The primary substance that human cells, and ultimately human beings, are made up of is what? A:
A:
output:
water