Answer:
Be
Beryllium
Explanation:
number of protons = atomic number.
number of electrons = atomic number
Answer:








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Description
The cell cycle, or cell-division cycle, is the series of events that take place in a cell leading to duplication
Answer:
c. More oxygen and less carbon dioxide
Explanation:
The composition of air in the layers between the soil is called soil atmosphere or gas.
The maximum percentage of gas in soil is nitrogen with 79.2 %. Then it is oxygen with 20.6 % and the last is carbon dioxide with 0.25 %. These gases are required in order to maintain life under the ground. The roots of trees and the microorganisms require soil atmosphere to carry out their functions.
This is called the nacreous layer, the pearly layer.
