Immune system because the white blood cells are used in the immune system.
Answer:
respiration
The source of the energy required to regenerate ATP is the chemical energy stored in food (e.g. glucose). The cellular process of releasing energy from food through a series of enzyme-controlled reactions is called respiration . Some of the energy released is used to produce ATP.
Explanation:
all based on research.
Life would not exist. The ozone layer is keeping all the gasses from escaping into space. So, without the ozone layer, there would be no oxygen for animals or carbon dioxide for plants. The ozone layer also reflects space radiation and harmful UV rays back into space, preventing them getting into the Earth's atmosphere.
B) bacteria are living organisms; viruses are not.
The properties that best measure the brightness of a star is it's Absolute magnitude from the standard distance of 32.6 light-years, or 10 parsecs.
<h3>What is star brightness?</h3>
According yo astronomers, star brightness is define base on the absolute magnitude of the star which is the degree in which the star is able to radiate or give more light .
It is define as the light intensity give out by stars.
Therefore, The properties that best measure the brightness of a star is it's Absolute magnitude from the standard distance of 32.6 light-years, or 10 parsecs.
Learn more about star brightness below.
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