71% of earths surface is covered in water. how much of it is fresh water and how is it distributed

Which of these best describes the scientific process

How does litmus paper indicate an acid?

Select each correct answer. more than one answer may be correct. which of the following is a characteristic of unicellular organisms? they can possess tissues and organs. all of their functions are performed by a single cell. they are usually microscopic. each of their cells is specialized to perform a specific function.