The early atmosphere of Earth had no oxygen, while the modern atmosphere contains significant amounts of this gas. What is the primary reason for this change?

on the planet jupiter, the acceleration due to gravity is approximately 26 m s2 , roughly 2.7 times the acceleration due

the answer is b. glad to .

the three components of a nucleotide are the nitrogenous base, the phosphate group and the five-carbon sugar.

1)

i))the process of preparing food by green plants in the presence of sunlight is called photosynthesis.

ii) leaf is the site for photosynthesis.

iii) it takes place as,

6h2o+6co2=c6h12o6+602