Answer:
option a
Explanation:
because When hydrogen is used to power a fuel cell, the only byproducts are water and heat—no pollutants or greenhouse gases are produced.
A positive control is a group in an experiment that receives a treatment with a known result, and therefore should show a particular change during the experiment. It is used to control for unknown variables during the experiment and to give the scientist something to compare with the test group.
Answer:
HI, So People need more explination, What was the experiment about? That way we can give a proper answer...
Explanation:
The answer to your question is C. glycerol.
Answer:
b. Intrinsic rate of growth (r)
Explanation:
The per capita rate of increase in the population size makes its intrinsic growth rate. The maximum intrinsic growth rate is exhibited by a population when all the required resources are available and there are no negative ecological interactions such as competition. Each population has its specific innate capacity to increase its size that is represented by "r ".