Answer:
Together,the number of protons and the number of neutrons determine an elements isotopes have slightly different mass numbers, the atomic mass is calculated by obtaining the mean of the mass numbers for its isotopes.
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The skin of a cell
molecule flow from high to low
glucose facilitation
ion channels
False. parasites infect and feed
The answer is segment Segment
90% of digestion and absorption takes place in the small intestines.
the main function of the small intestines is <span>absorption of nutrients and minerals from food.</span>