Answer: Farming
Explanation: Plowing the land is the first source of wealth.
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.
I think it might be rna but I’m not too sure
The appropriate answer is D ! in this the dominant allele is not fully dominant ! this is seen in Snapdragon !
so answer is D
