Why are cells called the “basic building blocks of life?” 1. The human body is made up of over 100 trillion cells.
2. Cells are shaped like blocks.
3. Most cells can only be seen with the aid of a microscope.
4. Cells are the basic structure in all living things.

4. Cells are the basic structure in all living things.

this protocol describes a detailed procedure for intracellular flow cytometry staining.

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.