I'm not completely sure what the question is but tonsils grow during the pre-teen years, but at about age 12 they start to shrink.
Answer:
Ion
Explanation:
An Ion is exactly as stated it bears either a positive or negative charge.
Answer:
D. dissolved oxygen meter.
Explanation:
Just did this question
Answer:
Protozoa are one-celled organisms, like bacteria. But they are bigger than bacteria and contain a nucleus and other cell structures, making them more like plant and animal cells. Protozoa love moisture.
True:
<span>Cell membrane: This cellular structure helps organisms maintain homeostasis by </span><span>controlling what substances may enter or leave cells.</span>
