Respiration is an exergonic reaction. An exergonic reaction is one in
which energy is released, and as a result the products of this reaction
will have less energy than the original products. Cellular respiration
can also be referred to as a catabolic pathway, which means bigger
molecules get broken down into smaller molecules and therefore there is
extra energy at the end of the reaction.
Most enzymes' optimum pH is neutral or close to neutral, like amylase found in saliva, which has an optimal pH = 6.8. Some enzymes prefer a more drastic pH, like pepsin, which can have an optimum pH of 1.7 to 2. Sometimes enzyme pH optima depends on where the enzyme is found.
The biological term is a pedigree.
Answer:
The depth at which Drew found the algae
Explanation:
The dependent variable was the depth at which he found the algae, because that is what he measured on each day.
The independent variable was the sky conditions, since that changed from clear to cloudy, which impacted the dependent variable/the depth of the algae.