The answer is B.
It describes the relationship between photosynthesis and respiration accurately.
But this rule rule is applicable only for double stranded DNA molecule. The possibility of Adenine=40% and Thymine=60% is only in single stranded DNA molecule. In the question, the DNA sample referred is a single stranded DNA. hope it helps :D
They have been in the Northern and Southern polar regions, and not within the inner part of earth, maybe due to there location
Answer:
Nitrogen is an essential nutrient for plants and a significant component of proteins, which all animals need to grow, reproduce and survive. The nitrogen cycle converts nitrogen into compounds that plants and animals can use. Humans and Animals Need Nitrogen All human tissue – muscles, skin, hair, nails and blood – contains protein.
The cell wall is made up of tough stringy cellulose fibers.
Hope this helps!!
