Which properties change the composition of a substance? a. physical properties b. neither chemical nor physical properties c. chemical properties d. chemical and physical properties

No plagiarizing ! 6th grade work! easy and 100 compare the parts of a cell and the cell as a whole to another common nonliving system (i.e., a car, a city, describe the parts of a cell and their primary function.

20 the main source of energy for our planet comes from the

Cells must be in osmotic equilibrium with their surroundings environments because if they swell or shrink thier membranes will rupture