Which characteristic of sound waves relates to loudness?

a. amplitude
b. frequency
c. modulation
d. wavelength
e. pitch


A

Biology & Microbiology

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According to the biological species concept, two groups of organisms that are unable to form fertile, viable hybrids are considered to be different

A. races. B. species. C. kingdoms. D. hybrids. E. cohabitants.  

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The mammalian acrosome contains enzymes that ____

a. digest the zona pellucida b. digest the endometrium c. stimulate ovulation d. stimulate sperm motility e. inhibit premature ejaculation

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All commercially produced bananas are seedless because the plants that bear them are ____

a. triploid b. haploid c. treated with colchicine d. lacking ovaries e. grown by tissue culture propagation

Biology & Microbiology

Organisms that are nocturnal are more likely to communicate using

A) sight and sound. B) sight and smell. C) smell and sound. D) touch and taste.

Biology & Microbiology