Natural biomes once covered nearly all of the land of the united states. how has the land of the united states changed today? a. about half of the land is now covered by anthromes, or human-altered biomes. b. nearly all of the land is now covered by anthromes, or human-altered biomes. c. human activities have removed wildlife from about half of the land. d. human activities have removed plant life from about half of the land.

In which of the following ways is the function of the surface of a microsphere similar to the function of an actual cell membrane? a.both make it possible for the conditions in the interior to be different from the conditions outside. b.both provide a barrier that keeps water from flowing across it so the interior remains dry. c.both separate the rna that forms in the interior from any rna that might form in the environment. d.both can actively move molecules into the interior or out into the surrounding environment.

Mr. olajuwan was in a horrific snowmobile accident. afterwards he had trouble walking and he had a loss of balance. which of the 4 major brain region was probably demaged

Below, the levels of organization in a multicellular organism are shown from least to most complex. which level of organization can be described as several different types of tissues working together to perform a common task?