When stripping electrons from an atom, the atom becomes a
A. different element.
B. negative ion.
C. isotope.
D. positive ion.
Answer: D
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Straight scratches on rock surfaces created by glacial abrasion are known as:
a. rock flour. b. glacial striations. c. glacial till. d. varves. e. moraines
What measurement does radar provide concerning clouds and precipitation?
What will be an ideal response?
Some toxic chemicals, such as those in DDT, can be stored in the fat tissue of animals. As these animals become food for larger and larger animals, the amount of the toxin gets larger and larger. What is this process called?
A. biophilia B. biosphere C. biotechnology D. biomagnification E. concentration index
If a marine animal has body fluids that have a lower salt content than the surrounding seawater, water will pass through the animal's body tissues from the ________ to the ________ because of ________.
A. inside; outside; osmosis B. outside; inside; electrolysis C. inside; outside; electrolysis D. outside; inside; osmosis E. None of these is correct; the salt moves, not the water.