Problem: OPTIONS:
- dioxide
- nutrients
- nitrogen
- oxygen
Q: Q: Systemic veins return blood low in what to the right atrium? A:
Answer: oxygen

Problem:OPTIONS:
- cyclones
- jet stream
- tidal activity
- downwelling

Q: What is the name for the sinking of the dense, salty seawater in cold climates? A:
****
A: downwelling

Q: What term describes a drug that has an effect on the central nervous system? A:
OPTIONS:
- nonaddictive drug
- elemental drug
- steroidal drug
- psychoactive drug
psychoactive drug

Q: What is the period during which humans become sexually mature called? A:
OPTIONS:
- adulthood
- maturity
- adolescence
- puberty

Answer: puberty

Question: Q: Deposition refers to when a gas changes to what state? A:
OPTIONS:
- half liquid half gas
- liquid
- plasma
- solid
Answer: solid

input: OPTIONS:
- seeds
- ions
- toxins
- spores Now, answer this question: Q: Most fungi reproduce asexually by producing what? A:
A:
output:
spores