What are the fundamental unit of living organisms​

Cells

Explanation: Cells are the smallest and the fundamental unit of all living organisms.

The cell is the fundamental unit of structure and function in all living organisms. The activity of an organism depends on the total activity of independent cells. Energy flow (metabolism and biochemistry) occurs within cells. Cells contain DNA which is found specifically in the chromosome and RNA found in the cell nucleus and cytoplasm.                    HERE U GO MY FRIEND              PLEASE MARK ME BRAINLIEST !

1.  the altitude -  Independent variable

2.  the growth of plants  - Dependent variable

3. the amount of water and nutrients -  Constant variable

4. the storeys of the building - Confounding variable

Explanation:

The fundamental parts of a scientific investigation or experiment are the kinds of factors remembered for the examination which are needy (to be contemplated), autonomous (can be changed) and the steady factors (stay same).  

The trial is likewise affected by another variable known as confounding variable which straightforwardly impact these essential factors and can cause or produce the futile outcomes in a test.

In the given question,

1.  the altitude -  Independent variable

2.  the growth of plants  - Dependent variable

3. the amount of water and nutrients -  Constant variable

4. the storeys of the building - Confounding variable