Which of the following is composed of two layers of lipids and protects the cell from the surrounding environment?
select one:
a. cytoplasm
b. cholesterol
c. cell membrane
d. carbohydrate

What is mitosis and how does it affect change

Ascientist and her team counted 200 individual deer in an area of 10 square kilometers. what is the population density?

Put the following steps of the convection process in the correct order. 1. gravity pulls cooler matter downward. 2. the matter expands and decreases in density. 3. an up-and-down flow of matter produces a convection current. 4. matter is heated. 5. warmed matter is forced upward. question 2 options: a) 4, 2, 5, 1, 3 b) 2, 4, 3, 1, 5 c) 3, 2, 5, 4, 1 d) 1, 4, 2, 5, 3