The carbon cycle ensures that carbon is not lost. which is another important benefit of the carbon cycle?
the carbon cycle regulate earth's temperature.
the carbon cycle ensures that living things have a continual source of hydrogen.
the carbon cycle transport nutrients in bodies of water.
the carbon cycle ensures that there is a continual supply of water.

The most appropriate answer would be "The carbon cycle helps regulate Earth's temperature".

The carbon cycle regulates the temperature of the earth by regulating the amount of carbon dioxide in the atmosphere.

Carbon dioxide along with other greenhouse gases such as water vapors, methane et cetera regulate the global temperature through the greenhouse effect.

i think it would be b. tissue because an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.