Rachel wants to test how sunlight impacts plant growth over time.
She will add varying amounts of
light to different sets of plants.
The sunlight is a(n)

Independent variable

Explanation:

In a scientific experiment, the variable that an experimenter varies or controls is called an independent variable. This variable has a direct impact on dependent variable.

In the question, Rachel wants to test how sunlight  impacts plant growth over time. Now as sunlight impacts plant growth this means sunlight is an independent variable whereas the plants are dependent variable as the amounts of sunlight impact the plants. Also Rachel changes/varies or controls the amounts of sunlight to different sets of plants. Hence from the above definition of an independent variable it is clear that sunlight is an independent variable.

try something like republic or democracy joined or something because its talking about a election party.

1.) question:

how was the agricultural revolution related to the industrial revolution?

d.) improved agriculture led to population growth, which increased demand for goods.

2.) question:

which of the following happened first in the events leading to american independence?

c.) the meeting of the first continental congress.

3.) question:

what was one advantage that cities offered businesses and industrialists?

answer:

d.) transportation networks

4.) question:

what economic philosophy developed in response to the problems of industrial workers?

a.) socialism

5.) question:

how does this image relate to the jacobins?

b.) the jacobins used this machine to scare and execute those who supported the king.

hope this !