Which of the following types of amines can form hydrogen bonds with water?
A) 1°
B) 2°
C) 3°
D) All can hydrogen bond with water.
D
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Recent genetic research indicates that ____ or more individuals are needed for an endangered species to maintain its capacity for biological evolution
a. 10 b. 100 c. 1,000 d. 10,000 e. 100,000
The per capita carbon footprint of a person living in India is more than double that of a person living in Sri Lanka because
A. Sri Lanka has more forest cover than India. B. Sri Lankans live in harmony with their environment in keeping with Buddhist tenets. C. India has more vehicles, industries, and other sources of pollution. D. No attempts have been made in India's largest cities to reduce carbon emissions.
What causes an asteroid to drop out of orbit and travel toward Earth?
a. the gravitational influence of planets b. the gravitational attraction of the sun c. a change in magnetic characteristics due to its age d. only the collision with another asteroid. e. the slow loss of water, causing a change in path
Molten rock beneath Earth's surface is known as ________, whereas molten rock on Earth's surface is called ________
A) magma; lava B) extrusive; intrusive C) lava; magma D) intrusive; extrusive