The ocean has a tremendous amount of salts dissolved in its water and is very warm around the tropics. Yet these regions of earth house millions of aquatic species. Explain
how the warm salty waters around the equator can still produce enough dissolved
oxygen to support life.

The tilt of the earth's axis of rotation is responsible for the a) ocean's tides. b) size of the moon. c) brightness of stars. d) earth’s seasons.

Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?

When did stem cell research become known ? who discovered stem cell? what experiments or studies have been conducted so far?