What are the similarities and differences between food chains and food webs?

A food chain shows a single connected path of energy flow through an ecosystem. It shows the different levels of eating in an ecosystem. Both a good web and a good chain include a number of organisms including both producers and consumers. A food chain is very simple while a food web is complex and consists of a number of food chains. In a food chain each organism has only one consumer or producer.

C) to ensure each new cell has an exact copy of the dna

Lipid because of the high percentage of carbon to carbon bonds, which store more energy than other bonds.