Q: Each enzyme has an optimal what at which its reaction rate is greatest? Choices: - weight - size - precipitation - temperature A:
temperature
------
Q: What is the order and family of a meat-eating cat like a tiger? Choices: - Synapsida felidae - Mammalia felidae - hierarchies felidae - carnivora felidae A:
carnivora felidae
------
Q: Do waves move faster when particles are close to each other or far away? Choices: - unaffected - far away - open - close A:
close
------
Q: What "kind" of water may take longer to become contaminated than surface water, while the natural cleaning process may take longer? Choices: - lake water - spring water - dam water - groundwater A:
groundwater
------