<span>The double helix of dna is which level of structure? a.Primary
</span>
Waxing crescent
First quarter
Waxing gibbous
Full moon
Waning crescent
Answer:
i think D is the correct answer
Explanation:
I am not sure but i have tryed
you know the answer and my answer is incorrect then i am sorry
The independent variable is that in which the result is dependent on. For experiments, this is usually the item being varied. For this case, what is being varied is that one group is given caffeine while the other is not. That makes the amount of caffeine given to be our independent variable.
Their source of carbon. Autotrophs obtain their carbon from inorganic sources such as from atmospheric carbon dioxide. Examples of autotrophs include plants, and euglena ( a protist).
Heterotrophs on the other hand, obtain their carbon from organic sources such as other organisms. Examples of heterotrophs include all secondary consumers, and decomposers.
