Selective herbicides are only able to kill specific types of plants and often leave some weeds in the field to continue to grow. Why would a farmer choose to use a selective herbicide?

3. Cellular respiration is a series of catabolic pathways that break down carbohydrates, such as glucose molecules, and free the energy that was holding the molecules together.

Define evolution?

Detergents can be used to reduce microbial concentrations and all of the following are true except: a. they are polar molecules that act as surfactants. b. the most effective ones are positively charged. in low concentrations they are bacteriostatic.

Describe some methods used to determine phylogeny

If carbon dioxide is needed for photosynthesis and water is plentiful, which of the following is likely to occur? A. The stomata will close until enough water is lost. B. Water pressure is going to decrease in the guard cells. C.

Charles darwin, after observing variability among plant and animal species in various locations, proposed an explanation for what he saw.

Sediments in and below a dewatered area of an aquifer become compacted because:

What is the largest available source of fresh water for drinking in the hydrosphere? A. Groundwater B. Oceans C. Rivers D. Glaciers

What is an abiotic factor that can be found in a rain forest ecosystem

Explain Why, in winter, most of the meltwater produced by salting the roads will not infiltrate the soil