Answer:
The most significant effect of the microbes on earth is their ability to recycle the primary elements that make up all living systems, especially carbon, oxygen, and nitrogen (N). Primary production involves photosynthetic organisms which take up CO2 from the atmosphere and convert it to organic (cellular) material.
<span>Right limbs. It is because there is a reciprocal relationship between limbs and hemispheres of brain. The left part of the brain controls the right part of the body and right part of brain controls the left part of the body.</span>
The semicircles are probably the longitude and the latitude, if that what you are talking about.
