A transport protein moves a Na+ molecule across its concentration gradient. What source of energy does it use? Glucose Lipids Polysaccharides ATP

Which of the following is the most likely result of converting forestland to urban development? a.the amount of land available for lumber production decreases. b.fewer trees are needed because cities are made mainly of concrete. c.people discover more efficient ways to grow trees. d. the price of lumber goes down.

An easy way to calculate the amount of energy available at each level is to what?

Did you know that a blue wales tongue weighs more than an elephant?