The answer is gel electrophesis
B because it’s talking about the tree itself. Saying that it’s plants would divert it to a different plant. The cells of the wood is what makes the tree and is relevant to the question
<span>The concentration of many people into the small area, for example, A city lowers the overall footprint of the population in the region.
Any pollution which results from people in a city can be isolated and treated more easily even than when people are being dispersed widely.
Many cities outlined suburbs to have a lower concentration of people because it can complicate public transport and provision of services. </span>
Answer:
Genetic variation is caused by:
mutation
random mating between organisms
random fertilization
crossing over (or recombination) between
chromatids of homologous chromosomes during
meiosis
