Which biome covers the largest part of earth's surface?

grassland
polar
marine
tropical rain forest

Explain why process 2 is so important to sexual reproduction identify processes 1 and 3 state one difference between the cells produced by process 1 and cells produced by process 3

Which best explains how a heat pump can heat a room? cold air from the house is moved through pipes, where it absorbs thermal energy. warm air from outside is pushed into the house to replace the cold air. combustion warms the air when chemical energy is transferred to thermal energy. fuel is used to move a piston, which pushes warm air into the house.

This is a situation in which genes are attached to an organism's sex chromosomes; the sex of an organism influences the expression of a gene.