Answer:
The kidneys take of up more Ca2+ and release vitamin D. The bones release Ca2+. The intestines increase reabsorption of Ca2+.
Hi,
"This is because water has a high heat capacity, which means it absorbs a lot of energy in order to increase in temperature (thus releases a lot of energy when it decreases in temperature). This means water can absorb a great deal of the energy on hot days, keeping the surrounding air cooler, and release a lot of energy to the air on cool days, keeping the air warmer"
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Answer:
In Late 1600s Anton von Leeuwenhoek develops a more powerful microscope that allows him to see living cells like bacteria.
In Early 1800s Matthias Schleiden and Theodor Schwann conclude that all living organisms are made of cells, and that cells can be produced from other cells.
Explanation:
The desert
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Answer:
There are histones in the nucleus that DNA coils around. The part of the DNA that is coiled around the histones is not accessible, and cannot be expressed in that cell. DNA that is not wrapped around a histone can be transcribed.
Explanation:
