How do pancake tortoises protect themselves from predators?
a. Their coloration serves as a disguise.
b. They emit an undesirable scent.
c. They have large jaws with teeth.
d. They puff themselves up and become wedged in between cracks in rocks.
e. They retreat into their shell.
ANSWER: d
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The loss of an electron by a molecule is called ____________________
Fill in the blank(s) with the appropriate word(s).
Ribosomes function as
a. 1 unit. b. 2-part units. c. 3-part units. d. 4-part units. e. a multidivisional unit.
When an atom's outer electron shell is filled, the atom is ____
a. unstable b. positively charged c. polarized d. most stable e. isotope
A broad-sense heritability of 0.8 for a particular trait indicates that
A) phenotypic variation stems from environmental influences. B) the trait is 80% heritable. C) genes and environment play equal roles in shaping the trait. D) genetic differences among individuals account for much of the phenotypic variation for that trait. E) None of these