Which of the following can pass through a dialysis membrane?
A) colloidal particles
B) macromolecules
C) small molecules
D) all of them
C
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Why was Alfred Wegener's hypothesis of continental drift not taken seriously by most geologists?
A) his evidence for former joining of the continents was faulty B) because it was and is known that continents do not move C) his mechanism for movement of the continents was faulty D) he was not a well-respected scientist
The term "rain shadow" is assigned to windward slopes
Indicate whether the statement is true or false
What is the name of the warm, dry, gusty wind that blows from the mountains?
a. Hopi b. Cherokee c. Sioux d. Chinook e. Zuni
The Earth does not crash into the Sun because
A. Sun's gravitational field is weak at Earth's distance. B. Earth has sufficient tangential speed. C. Earth has less mass than the Sun. D. the gravitational pull of other planets keeps the Earth in orbit.