Which is the best example of physical weathering?

1. the formation of a sandbar along the side of a stream
2. the cracking of a rock caused by the freezing and thawing of water


Answer; 2. the cracking of a rock caused by the freezing and thawing of water

Biology & Microbiology

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Emphysema affects about __________ million

people in the United States in a given year. a. 1 b. 2 c. 3 d. 4 e. 5

Biology & Microbiology

Which of the following features is unique to the Class Aves?

a) hair b) notochord c) wings d) shelled eggs e) barbules

Biology & Microbiology

daughter cells are

What will be an ideal response?

Biology & Microbiology

Plant cells often have a large membrane-bound sac that is used for storing water and other substances called a:

A. central vacuole. B. Golgi body. C. centriole. D. chloroplast. E. nucleus.

Biology & Microbiology