And silly science what is black marble called

Asquare kilometer of forest has 200 deer. what is the term that is used to describe this number?

Match each description to the appropriate biome. tropical savanna desert tropical rain forest taiga tundra has sparse vegetation and very cold temperatures located near the equator and contains trees that form dense canopy layers is very hot and dry, and has plants that need little water has cold winters, heavy snowfall and is dominated by conifers has warm temperatures and is dominated by grasses

Describe the function of the endomembrane system? what organelles are involved?