Answer:
Not enough information
Explanation:
You haven't given any reference. However, they are referred to as the building blocks of life because, for example, in Prokaryotic cells, which are unicellular, everything required for them to survive and reproduce is all found within a single cell.
<span>the time when the sun crosses the plane of the earth's equator, making night and day of approximately equal length all over the earth </span>
Anabolism-dehydration synthesis
B. 2.883 million kilometer
The Atlas. This is the topmost vertebra, and with the axis, it forms a joint that connects the skull to the spine. These two parts of the body (The Atlas and The Axis) are special, and different from normal vertebra, because they are made to allow a greater range of motion and movement in the head. I hope this helps! Also, google is always a helpful tool to use as well. :)