9) Standardized Assessment Practice - Choose the best answer. A chemist is identifying the elements found in a newly discovered sea sponge. Which can be used to identify
a particular element?

A. Size of the atoms
B. Number of electrons
C. Number of protons
D. Number of neutrons

archaebacteria are found in in forest soil.

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-lavira: )

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.

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if you add everything up correctly you should get 69 i got this because 50 plus 19 is it