What causes transpiration?

a. hydrogen bonding
b. the drying power of air
c. cohesion
d. turgor pressure
e. tension

b

Biology & Microbiology

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During the Cambrian, reefs were built by _____, but these communities were wiped out by a mass extinction about _____ million years ago

A. calcified sponges; 515 B. bacteria; 515 C. calcified sponges; 600 D. bacteria; 300 E. calcified sponges; 300

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Biology & Microbiology

A bivalent contains how many chromatids?

A. 2 B. 4 C. 8 D. Depends on the cell

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Biology & Microbiology

The algal ancestors of land plants are most likely similar to the ____

a. Rhodophyta b. Phaeophyta c. Chrysophyta d. Charophyta e. Radiolaria

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Biology & Microbiology

Air is continuously forced through tubes that thread through vascularized tissue in a pair of inelastic lungs in _____

a. some fish b. amphibians c. birds d. reptiles e. some small mammals

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Biology & Microbiology