Two types of ocean movement, surface currents and deep water currents, result from which of these? * (Note: Two of these are correct. You can only choose one.)

A. Temperature variations at different depths
B. The gravitational force from the moon
C. Large cargo ships pushing the water
D. Wind energy

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

Explain why phospholipid molecules form a bilayer. (3 marks)

What causes the force that pushes magma from the magma chamber through the pipe and vent of a volcano?