Question: Q: Some plants can detect increased levels of what when reflected from leaves of encroaching neighbors? Choices: - water - oxygen - air - light A:
Answer: light

Question: Q: Volcano chains form as an oceanic plate moves over what? Choices: - dust spot - Water spot - melt spot - hot spot A:
Answer: hot spot

Question: Q: The first reported nuclear fission occurred in 1939 when three german scientists bombarded uranium-235 atoms with slow-moving what? Choices: - protons - electrons - isotopes - neutrons A:
Answer:
neutrons