Which sphere of the earth system contains all living organisms?
a) atmosphere
b) biosphere
c) geosphere
d) hydrosphere

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.

In each transformation of energy , some energy what?

Anormal strand of dna is shown below, followed by the same strand of dna after mutations have occurred.