Hemoglobin is the red pigmented protein that allows red blood cells to carry oxygen to the cells that need it.
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Answer:
births - deaths = growth
Explanation:
(births - deaths) + (immigrants - emmigrants) is what you would normally use to calculate the growth of a population, but because they can't move, you can cut out the immigrant and emmigrant part of the equation.
Answer:
This process is called metabolism
<span>A progressive tax means that as you earn more, you get taxed at a higher rate.
The alternative is a regressive tax, which means you get taxed more if you have less.
There are different brackets of income for a federal tax calculation. People who made $1,000,000 pay more taxes as a percentage of their income than people who made only $50,000, for exaple.</span>