A scientist conducts an experiment to test the effect of light on plant growth. In each experiment, three plants of the same variety are each given 10 mL of water. One plant is exposed to full sunlight
for 8 hours, one is exposed to full sunlight for 4 hours, and one plant is kept in a dark room. Plant
height is measured after two weeks.

1.What is the independent variable in this experiment?

2.What is the group of items in the experiment in which conditions are kept the same referred to as?

hi my name is ashlynn and im 15

these macromolecules could either be amino acids, proteins or nucleic acids. they are responsible for the chemical changes and reactions that affects largely the cell and its composition. take for instance the cytoplasm of the cell where these organelles are settled. these simple organelles are composed of macromolecules which ignites and catalyses different functions that enables cells, in macro-perspective in motion and metabolism. in intestines for example, metabolism happens and breaking down parts of a food to simpler compounds that are used and these nutrients delivered throughout the body and again broken down by into smaller components.

i think the answer is a.keratin is the pigment responsible for skin color.