The cell membrane is what surrounds a cell and allows water to pass through.
There are many different types of specialized cells. This means they are modified by size, shape, or function according to their purpose. Specialized cells make up tissues, tissues make up organs, and organs make up the systems that work together to make up our bodies.
surface waves are the most destructive seismic wave
Each time an organism is consumed, 90% of the energy is lost as heat. that leaves only 10% for the carnivore