I believe the correct answer from the choices listed above is the third option. It is oxygen that is a necessary reactant for cellular respiration to occur. Cellular respiration, in a sense, is breaking down sugar in the presence of oxygen. Hope this answers the question.
The circulatory system is used to transfer blood
It is a completely false statement that amoebas <span>prey upon algae in aquatic environments. The correct option among all the options that are given in the question is the second option. I hope that this is the answer that you were looking for and it has actually come to your desired help.</span>
Answer:
1 g/mL. Thus, 20 mL of pure water weighs 20 g.
Explanation:
Answer:
they are heterotrophic and can produce their own food unlike things like microbes who rely on other things to live. they are also multicellular unlike most bacteria (mushroom is an exception)