This is an experiment where the researcher manipulates one variable, and control/randomizes the rest of the variables. It has a control group, the subjects have been randomly assigned between the groups, and the researcher only tests one effect at a time.
They might go extinct if they can't keep up with the competition
Answer:
The answer to this question is D. They multiply rapidly to increase their population. I sure do hope this helped dear! XD
Explanation:
When focusing on a slide, ALWAYS start with either the 4X or 10X objective. Once you have the object in focus, then switch to the next higher power objective.
Answer:
carbohydrate + oxygen = carbon dioxide + water + energy