Answer:
<u>B. Animals are always biotic components of an ecosystem. </u>
Explanation:
The living components of the environment are known as biotic factors. Biotic factors include plants, animals, and micro-organisms.
Biological evolution is the process through which the characteristic of organisms change over successive generations, by means of genetic variation and natural selection. It is most commonly defined as "changes in gene frequencies in populations".
Hope this helped :) <span />
Answer:
The last one is the correct answer<em>( a mRNA strand is created using the code in DNA)</em>
If they are trying to convert any measurements or just measure out the chemicals, it wouldn't be very familiar to them so they could make a mistake that can result of too much or too little of the chemicals, which can make the chemicals react differently.
The answer is B. We don't always have exact proof but our observations tell us more than we already know.
