The relatively rapid appearance of animal phyla in the Cambrian period is correlated with a rise in ________ at the same time

Fill in the blank(s) with correct word


oxygen

Biology & Microbiology

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A hot tub (approx. 104?F or 40?C) would most likely contain

A. psychrophiles. B. partiers. C. thermophiles. D. mesophiles.

Biology & Microbiology

The Arctic tern makes an annual migration of up to _______

a. 700,000 km b. 70,000 km c. 7,000 km d. 700 km e. 70 lm

Biology & Microbiology

The gastrocnemius muscle is located

a. in the forelimb. b. on the back. c. in the hip area. d. in the lower leg. e. in the neck.

Biology & Microbiology

What process produces a complementary RNA sequence from a DNA sequence template?

A) translation B) mutation C) transcription D) duplication

Biology & Microbiology