<span>Plants absorb energy from the sun and use photosynthesis to make sugars. Animals have mitochondria that use the sugars provided by plants to produce their own cellular energy. If there is not plant animal will have difficulty in getting energy. Also there are competition on the part of animals and human. I hope it helps. </span>
Like a prokaryotic cell, a eukaryotic cell has a plasma membrane, cytoplasm, and ribosomes, but a eukaryotic cell is typically larger than a prokaryotic cell, has a true nucleus and has other membrane-bound organelles that allow for compartmentalization of functions.
Easy 5 points. Stop, Drop, and Roll. In that order.
Hormones play an paramount role in a variety of body systems and govern a lot of what your body does. Hormones control, among other things, growth, sex drive, sexual development, reproduction, sexual function, metabolism, and thirst