Answer:
The highest magnification commonly used with the electron microscope is 200,000X. The 4x objective lens has the lowest power.
Explanation:
The depth of focus is greatest on the lowest power objective and the longest one is the lens with the greatest power.
Perigee is the answer it is closest to the Earth
The given statement is False.
For a source of water pollution the pollutant can be any undesirable substance present in water.
These undesirable substances can be biological, physical or chemical.
Biological substances such as harmful microorganisms or physical substances such as plastic, garbage and other substances present in water can also be considered as the water pollution.
The chemicals, and other substances are considered as the source of water pollution.
1) Store the cells DNA
2) Control cell division and cell growth
