Give a brief explanation of why food webs are preferred over food chains for representing the flow of energy in an ecosystem.

Answer AND Explanation:

Very often, one type of organism or species in an ecosystem happens to be the same food source for other types of consumers. The different food chains that exist in an ecosystem therefore form a complex network called food web.  Food webs are more complex than food chains and therefore there can be more than one primary producer thus increasing the flow of energy an ecosystem.

chromosomes carry the genetic information for organisms. also, chromatin is the thread like dna which is located in the nucleus of an organism.

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.