Water covers about ______ percent of the Earth's surface.

A. 33
B. 40
C. 50
D. 70
E. 80


Answer: D. 70

Biology & Microbiology

You might also like to view...

Which environment would be most likely to harbor a biodiversity hotspot?

a. tropical island b. temperate grassland c. temperate deciduous forest d. desert e. savanna

Biology & Microbiology

In negative feedback, the variable being regulated is changed in the ________ direction, while in positive feedback the variable is changed in the ________ direction.

A. inhibitory; stimulatory B. decreasing; increasing C. same; opposite D. opposite; same E. negative; positive

Biology & Microbiology

Which of the following are compounds?

A) H2O, O2, and CH4 B) H2O and O2 C) O2 and CH4 D) H2O and CH4, but not O2

Biology & Microbiology

Which factor is the most important algal contribution to the fungal component of a lichen?

A. Improved water conservation B. Mechanical protection C. Photosynthetically derived food D. Conversion of nitrogen gas to nitrates E. Pigment for camouflage

Biology & Microbiology