Q: What is the only substance on earth that is present in all three states of matter? Choices: - mercury - air - carbon - water A:
water

(Question)
Q: What type of plant keeps it green leaves year-round? Choices: - deciduous - conifer - cactus - evergreen plant A:
(Answer)
evergreen plant

Ques: Q: "crossing over" occurs during what phase of mitosis? Choices: - Prophase ii - prophase VI - prophase iii - prophase i A:
Ans: prophase i

(Q).
Q: Bacteria may divide several what an hour? Choices: - cells - hosts - days - times A:
(A).
times

Ques:Q: What simple machine consists of a bar that rotates around a fixed point called the fulcrum? Choices: - battering ram - rotor - catapult - lever A:

Ans:lever

Q: The mostly subterranean lifestyle of stone plants reduces water loss from evaporation and inhibits what? Choices: - reactions - chlorophyll - tissues - photosynthesis A:
photosynthesis