Lancelets are:a
carnivores.
b. filter feeders.
c. parasites.
d. herbivores.
e. algae feeders
B
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Which of the following species concepts is described by a complex group of populations that are not in direct physical or reproductive contact, but do exchange genetic material through linking populations of the same species?
A. Ring species B. Ecological species C. Evolutionary species
Inflammation or infection of the brain is called:
A) encephalitis. B) meningitis. C) myelitis. D) otitis externa.
Humans belong to domain ________, which is distinguished by cells that have ________.
A) Prokarya; organelles B) Archaea; ancient organelles C) Eukarya; organelles D) Prokarya; proteins
The eighteenth century naturalist __________
devised a much simpler naming system that we still use. a. Carolus Linnaeus b. Louis Pasteur c. Robert Koch d. Rosa canina e. all of these