Answer:
sugar
Explanation:
The sides of the stepping stool are made of rotating sugar and phosphate particles. The sugar is deoxyribose. The rungs of the stepping stool are sets of 4 sorts of nitrogen bases. Two of the bases are purines-adenine and guanine.
it is Bacteria that the substance
Answer:
Chlorophyll
Explanation:
chlorophyll is a photosynthetic green pigment that are found in mostly plants and algae, and they help plants absorb energy from the sun. they can be found in the chloroplast.
There are plenty of plants producing oxygen by photosynthesis.
Also, human's only use 5% of the oxygen in the air in respiration, there is 21% in the air.
Answer:
A planet is a celestial body that is in orbit around the sun.
It has sufficient mass for it's self gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium shape.
It has cleared the neighborhood around its orbit.
An example of planet is the earth