Nitrogen can be returned to the atmosphere when certain bacteria convert it from nitrate into nitrogen gas, which is a process called ________
Fill in the blank(s) with correct word
denitrification
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Explain why infectious diseases are much less lethal in developed countries than in underdeveloped countries
What will be an ideal response?
In humans, hair texture is an incompletely dominant trait. Curly is the dominant genotype, wavy is heterozygous, and straight hair is recessive. What is the probable phenotypic ratio for a cross between a man with wavy hair and a woman with curly hair?
a. All wavy hair b. 3/4 wavy hair; 1/4 straight hair c. 1/2 wavy hair; 1/2 curly hair d. All curly hair e. 1/4 curly hair; 1/2 wavy hair; 1/4 straight hair
What conclusion can be drawn from research on
abundance cycles of Canadian lynx and snowshoe hare? a. A simple predator–prey model explains the results. b. A simple plant–herbivore model explains the results. c. Raptor activity has no effect on the outcome. d. Complex variables are involved. e. Manipulation of experimental plots stopped cyclic changes in population densities.
Selective Media
A. allows the growth of fastidious microbes through the addition of certain growth enhancers B. supports the grouping of microbes based on different characteristic demonstrated in the media C. Supports the growth of most nonfastidious microbes D. Supports the growth of one type or group of microbes but not another