Which of the following produce organic acids that may contribute to weathering of rocks?

A. arctic plants
B. water plants
C. aerial plants
D. lichens
E. mosses


D. lichens

Biology & Microbiology

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Which of the following is true regarding hagfish and lampreys?

A. They are characterized by a bony lower jaw. B. They are invertebrates. C. They are bony fish. D. They are vertebrates.

Biology & Microbiology

The letter “B” in the above figure represents

a. transverse. b. radial. c. tangential. d. elliptical. e. obtuse.

Biology & Microbiology

Which of the following represents the best single

source of vegetable protein for humans? a. rice b. quinoa c. beans d. lentils e. tofu

Biology & Microbiology

Biological wealth is the source of

a. food. b. medicine. c. ecotourism. d. economic opportunity e. all of these.

Biology & Microbiology