Carbon dioxide is returned to the atmosphere primarily by theCarbon dioxide is returned to the atmosphere primarily by the

What is the euglena able to do that other protists cannot?

How does the movement of water in and out of a plant cell differ from movement in and out of animal cells?

What element has 2 energy levels and 1 valance electrons

1. Which of the following is a biotic factor? A. sunlight B. Worms C. water D. climate I think its B

Why does water heat up and cool down slowly? a. Water has a low heat of vaporization b. Water has a variable thermal potential c. Water has a high specific heat

An ecosystem includes all the living organisms in an area as well as the organisms' physical environment. An ecosystem is occupied by various populations, or groups of organisms of the same species. How can populations best be categorized?

Las bacterias tienen vida propia?

Using a microscope, a student observes a small disc-like green organelle in a plant cell. Which organelle is the student most likely viewing? vacuole chloroplast Golgi apparatus mitochondria

A family has two children. M represents male, and F represents female. What is the sample space for the gender of the children? a. {FM, FF, MM, MF} b. {FF, MM} c. {MF, FM} d. {F, M}

Phosphofructokinase is a four-subunit protein with four active sites. phosphofructokinase catalyzes step 3 of glycolysis, converting fructose-6-phosphate to fructose-1,6-bisphosphate. phosphoenolpyruvate (pep) is the product of step 9 of glycolysis.