B. The U.S stock market crash and Franklin D Roosevelt’s policies
Answer:
The water cycle, also known as the hydrologic cycle or the hydrological cycle, describes the continuous movement of water on, above and below the surface of the Earth.
Explanation:
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C. the microscope needs to be protected from dust
Answer:
The meaning of word molecule is The group of atoms forming a group is called molecule
In simple word , 2 or more atoms combine together to form a molecule for ex - Carbon dioxide ( 2 atoms of carbon and 1 atom of oxygen)
All living organisms have ways of maintaining homeostasis. They have mechanisms for controlling such factors as their internal temperature, water balance, and acidity. Homeostasis is necessary for normal life processes that take place inside cells.
