B. mass extinctions happen when populations crash due to overpopulation while background extinctions are more likely to result from disease.
It is not necessary that the eukaryotic cell contain vacuole. Newly form cells donot have vacuole. So the option with vacuole are all wrong and the right option is c. Because cell membrane, E. R, ribosomes and nucleus are always present in the living eukaryotic cell
Answer:
A
Explanation:
Firstly, if those ions were as helpful to 9 out of 10 people as they claim, it would have already been sold out.
Secondly, even if the data is correct, such product would not be for sale but for customization.
it means the water is safe
Answer:
The answer is D
Explanation:
Since the structure uses light energy, we can only assume that it's a chloroplast, since only chloroplasts contain chlorophyll and can absorb light energy.
Chloroplasts use carbon dioxide and water to make glucose, with oxygen as a byproduct.
The glucose produced is then used in metabolic reactions in the organism.
