Answer:
I would say the answer is D.
Explanation:
It makes the most sense.
Answer:
producer-kelp
primary consumer- sea urchin
secondary consumer- otter
Answer:
The correct answer would be nucleotide.
Explanation:
Answer: The SA node
Answer choices are:
<span>A. </span>The AV node
<span>B. </span>The SA node
<span>C. </span>The purkinje fibers
<span>D. </span>The AV bundle
The SA node<span> is the heart's natural pacemaker consisting of a cluster of cells located in the upper part of the wall of the right atrium. (the right upper chamber of the heart). The electrical impulses are produced and sent out from there to regulate heartbeat. This is also called the sinus code. </span>
