It takes to much energy and there's a lot of dirt
The fluid inside a cell is cytoplasm
They would not be able to survive in an environment without sunlight. For instance, they would not be able to survive in caves, because they need sunlight for food and if there is no sunlight then they can not create food and would starve.
Answer:
Well...
Explanation:First of all skin color is determined by how much melanin you have and the one thing that would show more variability in the human population is probably the one that uses less genes, because of how we come from only two genes which makes us different.
Explanation:
The answers are: C D E. Cells are semi-permeable which means it chooses what nutrients and h2o to enter and excretes cell waste into the bloodstream.