Answer:
I think A. The number of cacti, flowering shrubs, and desert trees that could grow during an extended dry period.
Explanation:
C. A wall of stones and mortar
This would act as a model describing the cell membrane.
Explanation;
A cell membrane is made up of a phospholipid bilayer with embedded proteins.
A cell membrane hold the different components of the cell together and to protect it from the environment outside the cell. It acts as a boundary between the inside environment and the outside environment of a cell.
It regulates the materials that enters and exits the cell; through selective movement of substances in and out of the cell.
Six dears migrated, this is the answer because immigration and emigration are both acts of migration.
