Nearly all earths energy come from what

Which type of solar heating uses mechanical means? electric active photovoltaic passive

What step has not yet been accomplished by scientists researching the origin of life on Earth?

What do nitrifying bacteria do! 1. remove nitrogen gas from ammonium 2. absorb nitrates through soil 3. convert ammonium to nitrates 4. release nitrogen from fossil fuels

Enzymes are proteins that speed up reactions by A. providing an additional energy source B. supplying additional molecules for the reaction C. removing inhibitors that slow down reactions D. lowering the amount of energy required

Which of the following is a renewable resource? a. Land b. Minerals c. Fossil fuels d. Wind

The ___ climate make up the largest climatic zone in earth

What does the soil based view of the phosphorus cycle compare and contrast with the global view of the phosphorus cycle

Which term should the nurse use to describe a scar that extends beyond the border of traumatized skin?

Floridian starch is characteristic energy storage material of which algae? (A) Red algae (B) Diatoms (C) Green algae (D) Brown algae

True or false: in some environments, a genetic predisposition to increased salt retention is probably adaptive, while in other environments this same trait is maladaptive?