input with options: Q: Most bird species display this behavior, meaning the male and female remain together for breeding for a few years or until one mate dies? A:
OPTIONS:
- dichotomy
- polygamy
- isolation
- monogamy
output: monogamy

Q: Q: Kinetic energy of moving particles of matter, measured by their temperatures are known as: A:

OPTIONS:
- visible energy
- atmospheric energy
- solar energy
- thermal energy

A: thermal energy

input: OPTIONS:
- increase
- diameter
- output
- density Now, answer this question: Q: The average number of individuals per unit of area or volume is referred to as a population's what? A:
A:
output: density

Q: What is made by trees and other plants during photosynthesis? A:

OPTIONS:
- methane
- carbon dioxide
- nitrogen
- oxygen

Answer: oxygen

Problem: OPTIONS:
- minerals
- air
- water
- animals
Q: Q: Green plants known as producers provide basic food supply for what besides themselves? A:
Answer: animals

Q: How do heavy alkanes affect the skin? A:

OPTIONS:
- they do not affect the skin
- damage the skin
- color the skin
- form a protective layer

Answer:
form a protective layer