Q: How do most fish reproduce with one another? Choices: - on land - asexually - same sex - sexually A:
sexually

Q: A low level of radiation occurs naturally in the environment and is called what? Choices: - Gamma radiation - Beta radiation - Alpha radiation - background radiation A:
background radiation

Q: Q: Cerebral palsy is a disease caused by injury to what organ as it is developing? Choices: - heart - skin - liver - brain A:
A: brain

Question: Q: A potential cause of extinction, competition between different species is called what? Choices: - parasitism - intraspecific competition - mutualism - interspecific competition A:
Answer: interspecific competition

*Question*
Q: What do ocean mollusks use to absorb oxygen from the water? Choices: - shells - scales - pores - gills A:
**Answer**
gills

Q: Q: What kind of eruption do scientists think is caused by a very large magma chamber erupting entirely in one catastrophic explosion? Choices: - brucei eruption - mangxamba eruption - supermagma eruption - supervolcano eruption A:
A: supervolcano eruption