Why would scientists use the model of a food web shown in the diagram? they would use it to show how different trophic levels react to stimuli. they would use it to show the flow of energy through an ecosystem. they would use it to show when different species were ready to reproduce. they would use it to show which organisms decomposed at the fastest rate. im desperate

Food webs show the flow of energy (stored as organic molecules) through ecosystems. Thus, a scientist would use a food web to show the flow of energy through an ecosystem.

They would use it to show the flow of energy through an ecosystem.

Explanation:

A food web is the network of interconnected food chains. It represents the branched food chains wherein one plant species serve as food for many different primary consumers and one specific primary consumer feeds on various plant species. Food webs represent the flow of energy from one tropic level to next through ecosystem.

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands

he forelimbs below belong to four species that descended in a direct line from the ancestral mammal shown above. of the four descendants shown, which species most likely appeared earliest in evolutionary history?