Which of the following statements is true regarding chemical weathering?
A. It plays a major role in the short-term
carbon cycle.
B. It releases CO2 into the atmosphere.
C. It relies on the acid SiO2.
D. It contributes to the accumulation of
CaCO3 in oceans.
E. It relies on bacteria to break down rocks.
D
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Describe some of the advantages of segmentation
What will be an ideal response?
Which of the following gives the correct order of layers the sperm crosses when entering the egg?
A. oocyte plasma membrane, corona radiata, zona pellucida B. corona radiata, oocyte plasma membrane, zona pellucida C. zona pellucida, oocyte plasma membrane, corona radiata D. zona pellucida, corona radiata, oocyte plasma membrane E. corona radiata, zona pellucida, oocyte plasma membrane
One technique for chromosome analysis is called ____________________, which uses chromosome-specific DNA
sequences attached to fluorescent dyes to target specific chromosomal regionsFill in the blank(s) with the appropriate word(s).
The main nitrogenous waste of adult amphibians is:
a. ammonia. b. urea. c. uric acid. d. peptides. e. purines