Which is not an example of a transfer point? * •Villi

•Alveoli

•Cell Membrane

•All of the above are transfer points

What is hydroelectric power produced by?

The united states produces an average of 429 billion pounds of food annually. about 133 billion pounds of that food ends up as waste.the percentage of food that the united states wastes each year is %.

In the diagram below, the northern hemisphere would be in what season at position a a.fall b. winter c.summer d.spring