The sun heats the earth's water. this warm water turns into a vapor, and rises into the atmosphere, where it cools off. what happens to this water vapor? a. the water vapor evaporates and escapes into space. new water is formed by precipitation. b. the water vapor condenses as it cools, then it forms clouds. it later returns to the earth as precipitation. c. the water vapor only rises for a very short time, then settles back into the ocean unnoticed. d. the water vapor pushes clouds out of the way as it rises. this causes overcast conditions to clear.

For a to be healthy, it has to have lots of different kinds of plants and animals. all of the different types of plants and animals in an ecosystem. name four types of ecosystems from those listed in the video. b) c) d) most living things live here. all living things depend on how an ecosystem like a game of sticks? why should we build new buildings on existing land? name four extinct species from those listed in the video. b) c) d) the best way to wipe out a species is to the largest ecosystem in the world is this percent of the world is covered by water. how many of all species in the world live in the ocean? list five things you can do to increase biodiversity. b) c) d) e) how many species are we losing per hour?

Acceleration is a direct result of a.) balanced forces b.) unbalanced forces c.) gravity d.) velocity hurry!

The first generation of offspring from the cross of two parents is called the a.f1 generation b.f2 generation c.short generation d.p generation