Answer:
four trophic levels
Explanation:
All food chains and webs have at least two or three tropic levels. Generally, there are a maximum of four tropic levels. Many consumers feed at more than one tropic level.
The atoms and molecules produced by the reaction are called products. This causes the atoms to be rearranged into new substances.
The answer:
An atom's ability to undergo chemical reactions is determined by its outermost electrons.
Overexploitation, Habitat loss, invasive species, climate change
In the simplest sense, expressing a gene means manufacturing its corresponding protein, and this multilayered process has two major steps. In the first step, the information in DNA is transferred to a messenger RNA (mRNA) molecule by way of a process called transcription.
