The earth is made up of many interacting system which are quite dynamic in nature. The earth is sub divided into four components which are THE ATMOSPHERE, THE HYDROSPHERE, THE BIOSPHERE AND THE GEOSPHERE. These are the separate systems that made up the earth system.
The hydrosphere is make up of all the water components on the earth surface and how the water cycle through nature. The atmosphere refers to the layers of gases that surround the planet earth while the biosphere refers to the living components on the earth surface. All these systems interact together to keep life existing on earth.
Answer:
(a) energy source, either sunlight or chemicals
Explanation:
An eukaryote is a cell that has organelles like the mitochondria, nucleous, etc.. A prokaryote is a cell with no organelles, meaning that the dna flows freely in it. A way i remember which is which, is that the "pro" in prokaryote rhymes with "no" which means "no organelles"
