Problem: OPTIONS:
- enlarged mitochondria
- presence of cytoplasm
- absence of cytoplasm
- presence of a nucleus
Q: Q: What is the main difference between prokaryotic and eukaryotic cells? A:
Answer: presence of a nucleus

Problem:OPTIONS:
- parasitism
- intraspecific competition
- mutualism
- interspecific competition

Q: A potential cause of extinction, competition between different species is called what? A:
****
A: interspecific competition

Q: What type of resource is water power? A:
OPTIONS:
- biological
- nonrenewable
- geothermal
- renewable
renewable

Q: What is the main component of phytoplankton? A:
OPTIONS:
- amoebas
- seawater
- cells
- algae

Answer: algae

Question: Q: The viscosity of a liquid is a measure of what? A:
OPTIONS:
- resistance to change form
- ability to absorb flow
- adaptability to surroundings
- resistance to flow
Answer: resistance to flow

input: OPTIONS:
- organic selection
- natural change
- spontaneous variation
- natural selection Now, answer this question: Q: Evolution occurs by what process whereby better-adapted members pass along their traits, according to darwin? A:
A:
output:
natural selection