In this food web, energy is transferred directly from the __ to the __.

Why was the sample heated in step 5? describe the chemical principles involved in the reasoning behind this step?

Consider the last statement in the prompt: "people take such environmental factors into account in their choices when deciding where to live." do all people have a choice as to where they live? what factor plays a key role in this decision and may therefore play a large role in determining quality of life?

Classify the structures as homologous or analogous, depending on their structure and function.