The term for the type of key that biologists used in separating<span> groups of organisms that are based on couplets is called taxonomic key. This key is very useful in the identification and classification of a </span>specific organism and it usually has an analytical characteristic.<span> </span>
The answer you might be looking for it the ‘sun”
Green plants and trees use photosynthesis to make food from sunlight, carbon dioxide and water in the atmosphere: It is their primary source of energy. The importance of photosynthesis in our life is the oxygen it produces. Without photosynthesis there would be little to no oxygen on the planet.
The following were required;
- Dependent Variable - productivity of workers
- Independent Variable - drinking the special juice
- Control group - Group B
<h3>What is a variable?</h3>
A variable is a measurable quantity that changes in an experiment. The variable that is manipulated in the experiment is called the independent variable.
Now these are the variables that are involved in this experiment:
- Dependent Variable - productivity of workers
- Independent Variable - drinking the special juice
- Control group - Group B
Learn more about experiment variable:brainly.com/question/16550062?
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