Please answer the question in the picture

The last option, The temperature of the air in each box

Explanation:

An Dependent variable is the variable that is being tested or measured in an experiment while an independent variable is the cause of a change in the dependent variable.

Here, temperature is being measured. Therefore, it is the dependent variable.

Sunlight for 1 hour causes a change in temperature air in the two boxes. Therefore, it is the independent variable

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.