The pH of stomach acids is usually
a. 2.
b. 4.
c. 7.
d. 10.
e. 12.
A
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What are the consequences of increasing crop yields to feed a growing human population?
A. All of the answer options are correct. B. loss of biodiversity through conversion of forests and grasslands to agricultural fields C. eutrophication and dead zones resulting from increased use of fertilizer D. greater input of carbon dioxide into the atmosphere through the burning of fossil fuels E. decreased biological storage of carbon through deforestation
Dideoxynucleotides are used in:
a. DNA ligation. b. Southern blotting. c. polymerase chain reaction. d. DNA sequencing. e. gel electrophoresis
A mature maple tree can have a mass of 1 ton or more (dry biomass, after removing the water), yet it starts from a seed that weighs less than 1 gram. Which of the following processes contributes the most to this huge increase in biomass?
What will be an ideal response?
Arbuscular mycorrhizal fungi invade plant roots, with many species forming mutualistic associations that benefit both the fungus and the plant.
Answer the following statement true (T) or false (F)