What are the three main features that separate commercial farming from subsistence agriculture?

Which of the following is an example of a fishing technique that takes advantage of natural tendencies of some fish?

Dendrochronology involves dating of historic and geologic events through the study of: a. growth layers in shells. b. oxygen isotope profiles in glacial ice. c. remnant magnetism in iron-rich minerals. d. annual growth rings in trees.

Which of the following is not a result of globalization?

On a topographic map what indicates the difference in elevation between adjacent lines

Why can you see fainter stars with an 8-inch telescope than you can see with your naked eye?

Growing sugar beets for sugar, as an alternative to importing sugar made from sugar cane, is an example of A) import substitution. B) a quaternary sector activity. C) flexible production. D) vertical disintegration. E) deindustrialization.

Which strategy can scientists use to learn about Earth's deepest layers?

Select all the following that are solutions to environmental problems in the region. coordination of environmental efforts between sectors enforcement of environmental regulations increasing deforestation increasing soil compaction sustainable land

Rural to urban migration is happening on a massive scale due to population pressure. a) True b) False

Which of the following is a major ocean on earth