Using organic matter such as manure or compost for fertilizer
A. improves fertility.
B. aerates the soil.
C. increases the water holding capacity of the soil.
D. provides food for beneficial soil microorganisms.
E. All answers are correct.
Answer: E. All answers are correct.
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Large external polysaccharides are degraded by bacteria and archaea using ________ ________, which they secrete outside the cell.
Fill in the blank(s) with the appropriate word(s).
An interaction in which one partner benefits with no effect on the other is called a ____
Fill in the blank with the appropriate word.
Natural or man-made substances released into soil, air, or water in greater than natural amounts are called:
a. acids b. pollutants c. nutrients d. metals e. chemicals
Multigene families are
a) usually clustered at the telomeres. b) identical or similar genes that have evolved by gene duplication. c) groups of enhancers that control transcription. d) sets of genes that are coordinately controlled. e) equivalent to the operons of prokaryotes.