All animals with tissues have

A) three germ layers.
B) radial symmetry.
C) bilateral symmetry.
D) symmetrical bodies.
E) two germ layers.


D

Biology & Microbiology

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The tapetum lucidum is a key adaptation to

A. visual function in the deep sea. B. visual function in fast moving predators. C. visual function in brightly lit shallow marine waters. D. visual function in prey species that require wide fields of vision. E. visual sensitivity in nocturnally active animals.

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One kind of acid rain forms when _____ from coal-fired power plants combines with water vapor in the air

a. nitrogen oxides b. sulfur dioxides c. sulfuric acid d. calcite e. aluminum

Biology & Microbiology

Intraspecific competition limits population size

Indicate whether the statement is true or false

Biology & Microbiology

Explain the similarities and differences between direct and indirect methods of measuring microbial growth, and give examples of each.

What will be an ideal response?

Biology & Microbiology