It acts as a reactant in a chemical reaction.
The ER comes in two different morphological forms: smooth ER and rough ER
Answer:
It is important to have more than one piece of evidence to make sure that the evidence is actually evidence. Or in other words, that the evidence is proven true. With only one piece of evidence, you can't be fully sure if calculations were correct, if the source was trustworthy, etc.
Multiple evidence is kinda like double checking math problems. If you don't do it, you can't be 100% certain the answer is correct.
Speciation of plants can make us grows plants with a desired attribute.
This make the plants that we want could fulfill more of our needs, whether it's nutrients , material, or aesthetic purposes
hope this helps