What are the elements of a fief? consider people, land, and jobs that make up a fief.

During which era in earth's history were the first insects? mesozoic precambrian cenozoic paleozoic

State a hypothesis with a numerical estimate of the calories contained within a peanut based on the nutritional information on the package label combined with what you have learned in this lesson about fuel efficiency and calorimeters.

Can you give an explanation of what medc and ledc are.