Earth’s lithosphere is composed of a. the crust only. b. the mantle only. c. the crust and the upper portion of the mantle. d. the mantle and the upper portion of the outer core.

Vegetation that grows along the floors of tropical and temperate forests is called undergrowth. how is the undergrowth of a tropical rain forest most likely to differ from the undergrowth of a temperate forest? a. a tropical rain forest's undergrowth most likely experiences periods of dormancy during colder weather. b. a tropical rain forest's undergrowth most likely experiences periods of dormancy during rainy weather. c. the undergrowth of a tropical rain forest most likely requires less sunlight. d. the undergrowth of a tropical rain forest most likely requires more sunlight.

Which phase of the cell cycle ensures that identical copies of the dna are made for daughter cells?

Explain how organisms could be harmed by high levels of salt from roadways?