What is the key concept addressed by the question?
What will be an ideal response?
The question asks about the properties of liquid
water and ice.
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Which bases are found in RNA?
a. adenine and uracil only b. adenine, thymine, and cytosine only c. adenine, uracil, and cytosine only d. adenine, uracil, guanine, and cytosine e. adenine, thymine, guanine, and cytosine
Organisms use _____ for asexual reproduction
a. mitosis b. binary fission c. meiosis d. more than one of these e. none of these
Which of the following has no part in today’s
concept of natural selection? a. inheritance of acquired characteristics b. competition for limited resources c. inherited variation d. overproduction of offspring e. survival of the best adapted
Which subatomic particles can vary between isotopes of the same element, without changing the observed chemical properties?
(a) electrons (b) protons and neutrons (c) neutrons (d) neutrons and electrons