What is the name of all physical material in the universe

Which statement is true about cell differentiation? cell differentiation happens in all cells. results in two new identical daughter cells. causes cells to change type and become specialized. occurs during cell division.

Plz plz plz quick! 49 points for whoever which of the following statements about greenhouse effect is true? *life on earth is suffering because of greenhouse effect *the greenhouse effect is caused by human activity *all greenhouse gases are harmful *life on earth would not exist without the greenhouse effect

Which kind of worm has a closed circulatory system? a planarian b fluke c pinworm d an earthworm