Answer:
Option). It permits hydrogen bonds between DNA strands to dissociate.
Explanation:
PCR (polymerase chain reaction) techniques can bed defined as a technique, which is used for in vitro amplification of sample DNA. It is made up of three steps, denaturation, primer annealing, and extension.
The first step in PCR is heating of sample DNA to denature the double stranded DNA by breaking hydrogen bonding present between bases of double stranded DNA.
Due to this, double strands of DNA get separated and provide templates for synthesis of daughter DNA strands.
Thus, the correct answer is second option.
Answer:
The environment in which these predator/prey species exist has a specific carrying capacity. The prey species has to add the number of prey individuals equal to the number of prey individuals that have been removed by the predator. If they cannot maintain this balance, then both the species will become extinct.
Explanation:
Two thirds of a cell is water the rest of the mixture of molecules ,manly protein , lipids and carbohydrates
Answer:
B- They recycle mass back into the ecosystem
"When decomposers eat off of dead plants and animals, they are recycling it and turning it into nutrients for other plants. It’s a continuous cycle that prevents the build up of waste."
Explanation:
