No it is rare..............
Answer:
They help scientists observe things that are very small.
Explanation:
Geologists use a lot of tools to aid their studies. Some of the most common tools used are compasses, rock hammers, hand lenses, and field books.
Active transport is the process in which substances are absorbed against a concentration gradient, i.e. from a lower to a higher concentration.
Answer:
46 chromosomes
Humans have 23 pairs of chromosomes, so our hearts have 46 chromosomes.
Explanation:
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