how is carbon moved through the carbon cycle through the process of photosynthesis and cellular respiration

Give the biological term for: structures that display characteristics of living organisms only within living cells

This is an active transport mechanism by which cells pump sodium and potassium ions against the concentration gradient

The serengeti plains are part of the african savanna ecosystem and are home to a variety of different species of plants and animals. the serengeti plains experience a seven-month period of seasonal drought each year, during which the ecosystem receives only four inches of rain and the availability of some resources becomes very scarce. which type of limiting factors does the seasonal drought in the serengeti plains affect?