Which phrase best describes the effect of a catalyst on a chemical reaction? Select one: a. decreases the reaction rate b. decreases the activation energy c. increases the temperature d. increases the volume of reactants

Which factors limit the productivity of a marine ecosystem?

The development of the zygote into a multicellular organism organism is the result of

What is the OH - concentration of PH 8

What phase of meiosis is related to mendel's law of independent assortment?

What condition might allow a contractile vacuole to pump more quickly or pump more slowly?

Which transport mechanisms require the formation of a vesicles to transport material into or out of the cell? A: diffusion and osmosis B: exocytosis and calcium pumps C: exocytosis and endocytosis D: diffusion and facilitated diffusion

Why does my female cat roll around after mating?

Which feature is not the result of a glacier carving out rock as it moves? A. Cirque B. Terminal moraine C. Fjord D. Horn peak

3. In which process do substances have to be in direct contact when heat moves from areas of more heat to areas of less heat?

While on an archaeology expedition, you unearth a skeleton with the following characteristics: four long, slender finger bones and a smaller opposable thumb bone, long arm bones, fingernails, and eye sockets close together on a skull.