Plowing removed the grass from the great plains and exposed the soil. what effect did this have when a drought struck the great plains during the 1930s? a. it had no effect. b. it reduced the soil’s fertility. c. it to cause the dust bowl. d. it prevented sod from developing.

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?

Which prefix mean under less or below

Which of the following explains why a tree is often used as a model to represent the principle of common descent