I thought it was (d) but I might be wrong
Answer: The NEGATIVE CONTROl is the test tube that is filled with ONLY distilled water.
Explanation:
A negative control of an experiment is carried out alongside the main primary experiment except that the treatment is changed to something that is predicted to have no result. In the negative control, the student does not expect any response. This would help the student compare the result of a new experiment against an already known existing results.
Analysing the experiment carried out by the student, She filled two test tubes with distilled water and placed a piece of Elodea in one of the tubes, leaving the other without a plant. The other test tube that contains only distilled water is the negative control because she wasn't expecting any result from it. It's also served as a control sample to the primary experiment. This is observed as she blew in each tube to add carbon dioxide, which caused the distilled water to become more acidic. This would help the student know that the that experimental results are valid and to ensure that time is saved.
I beilieve it is Passive transport
Answer:
<em>The correct option is B) all of the genes found within the ecosystem</em>
Explanation:
Genetic diversity can be described as the difference genetic varieties or the differences in genome of species. By these variation, a population of a species have organisms with different physical traits in them. In a rain forest, the variations seen in all the living things of the rain forest will be termed as the genetic diversity of the rain forest. The more the number of organisms, the more will be the genetic diversity.
Answer:
space
Explanation:
they figured it out going to space and since a star is a small peice of the sun they can't touch it it's impossible without getting heat burns or dying so they ither observe a star using a telescope or went to space for days