Why don’t poor farmers use the machinery and fertilizers of green revolution farming? a. they misused and broke them. b. they do not like to use them. c. they cannot afford them. d. they are afraid of them.

What factors contribute to the effect an environmental toxin has on the human body?

The scientific method is limited to investigating physical phenomena that are which of the following? select all that apply. observable repeatable falsifiable unique measurable

Which of the following statements is true regarding a basic amino acid? a.) the hydrophilic r group of a basic amino acid will be located on the interior of a protein b.) the positively charged r group of a basic amino acid could bind dna c.) the r group of a basic amino acid would only be able to form covalent bonds with other molecules d.) a basic amino acid would be considered both polar and hydrophobic e.) all of the above