(Q).
Answer the following question given this paragraph: 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).
Answer the following question given this paragraph: As erosion by groundwater continues, the ceiling of a cave may collapse. The rock and soil above it sink into the ground. This forms a sinkhole on the surface. You can see an example of a sinkhole in Figure below . Some sinkholes are big enough to swallow vehicles and buildings. Q: What is formed when the ceiling of an underground cave collapses? Choices: - hill - groundwater - mountain - sinkhole A:
(A).
sinkhole

(Q).
Answer the following question given this paragraph: As the human population continues to grow, different factors limit population in different parts of the world. Space, clean air, clean water, and food to feed everyone are limiting in some locations. Worldwide though, human ingenuity has not placed a limit on the population. Not only does the population increase, the rate of population growth increases. Q: Is the rate of population growth increasing or decreasing? Choices: - suggesting - Vanishing. - preventing - increasing A:
(A).
increasing