(Q).
Answer the following question given this paragraph: Q: What is the most important process for the survival of a species? Choices: - digestion - differentiation - metabolism - reproduction A:
(A).
reproduction

(Q).
Answer the following question given this paragraph: Energy in a body of water can be gained or lost depending on conditions. When water is heated above a certain temperature steam is generated. The increase in heat energy creates a higher level of disorder in the water molecules as they boil off and leave the liquid. Q: What do you need to do to water to make it steam? Choices: - freeze it - stir it - cool it - heat it A:
(A).
heat it

(Q).
Answer the following question given this paragraph: Ecological pyramids can demonstrate the decrease in energy, biomass or numbers within an ecosystem. Energy pyramids are discussed at http://www. youtube. com/watch?v=8T2nEMzk6_E (1:44). Q: What can demonstrate the decrease in energy, biomass or numbers within an ecosystem? Choices: - biomes - spontaneous mutation - food chains - ecological pyramids A:
(A).
ecological pyramids