What is the function of nitrogen-fixing
bacteria?
a. they are able to repair damaged nitrogen compounds.
b. they are able to release nitrogen into the atmosphere.
c. they are able to take atmospheric nitrogen and convert it to
usable ammonium.

The allele for curly hair is incompletely dominant. if a mother is homozygous for curly hair and the father is homozygous for straight hair, what percentage of the offspring will exhibit characteristics of both parents? 25 percent 50 percent 75 percent 100 percent

What can be said about farmers in highly developed countries? a) they have little or no negative impact on the environment. b) they practice subsistence agriculture. c) they are able to incorporate polyculture into their farming practices. d) they utilize organic farming techniques on a regular basis. e) they rely on large amounts of energy from fossil fuels.

Eutrophication caused by human nutrient pollution.