Which of the following best
describes how genes can be regulated in the body?

amber has allowed scientists to study dna that has been preserved over millions of years.

it's not c. i took the quiz and got it wrong. so my best guess is b.

have a great day, and hope this .

the nitrogen cycle provides nitrogen to the ecosystem from the atmosphere, ground and oceans. nitrogen is an important component of complex molecules such as amino acids and nucleotides, which lead to the creation of proteins and dna, the building blocks of all life. plants absorb nitrogen in the form of ammonium, nitrate ion and, on rare occasions, as amino acids. animals receive nitrogen necessary for biological processes from feeding on living or dead organic matter.