Carbonaceous chondrites I. contain mostly iron and nickel. II. contain volatiles. III. contain chondrules. IV. are similar in composition to the S-type asteroids
a. II & III
b. I, II & III
c. II, III & IV
d. I, III, & IV
e. I, II, III, & IV
a
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A __________ neuron takes nerve impulses away from the central nervous system.
Fill in the blank(s) withe the appropriate word(s)
Lightning converts N2 to a nitrogen form that enters soil and can be readily assimilated by plants
Indicate whether the statement is true or false
Which of the following is NOT true about DNA replication?
A.) It must occur before a cell can divide B.) Two complementary strands are duplicated C.) The double strand unwinds and unzips while it is being duplicated D.) The new DNA molecule has two newly-made strands.
In nutrient-rich water, photosynthetic protists may undergo population explosions known as __________.
Fill in the blank(s) with the appropriate word(s).