Answer:
Explanation:
Not sure about the first question but
#2: hybrid
#3: alleles
Answer:
<em>I think the answer might be oxygen</em>
Explanation:
<em>I think this because you need oxygen to survive. Right?!</em>
<span>since plants are at the bottom of the food web and provide the most energy</span>
Approximately twenty-five elements occur naturally on earth. Remaining elements either have to be synthesized or obtained through chemical reactions.
