Which statement best describes why warm ocean currents are usually surface currents?

a) warm water is less dense than cold water.
b) ocean tides bring warm water to the surface.
c) warm water contains more salt than cold water.
d) ocean water loses heat to the air at the surface.

What happens during the fall in september

Aball is thrown vertically upwards from the top of a tower with a speed of 100m/s.it strikes the pound near the base of the tower after 25sec . the height of the tower is

Answer asap 50 points which of the following illustrates how a venus fly trap senses that an insect has landed in its open leaves? 1. using tiny hairs, the leaves sense a change in light. 2. using tiny hairs, the leaves taste a chemical. 3. using tiny hairs, the leaves detect a touch. 4. using tiny hairs, the leaves sense a change in water levels.