(Q).
Q: Fruit fly and brine shrimp hox genes have evolved independently for how long? Choices: - 60.000 million years - 100.32 million years - one billion - 400 million years A:
(A).
400 million years

(Q).
Q: Which gas is responsible for global warming? Choices: - oxygen - hydrocarbons - ozone - carbon dioxide A:
(A).
carbon dioxide

(Q).
Q: An inversion may result when what kind of mass moves over cold ground? Choices: - warm water - cold water - cold air - warm air A:
(A).
warm air