The theory that all living organisms are descendants of different life forms that existed in the past iscalled:a
organic evolution.
b. astrology.
c. paleontology.
d. plate tectonics.
e. natural selection.
A
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The organelles that function as a cell's "garbage disposals," breaking down organic materials, are
A. Golgi apparatuses. B. ribosomes. C. lysosomes. D. mitochondria.
Throughout the world, there is general agreement that the safest place to store long-term nuclear waste is
A) in the major oceans. B) in space. C) in high security above ground buildings. D) deep underground.
Why would increasing acidity of the ocean be a problem?
A) Acid would dissolve calcium carbonate shells or sea organisms B) Acid will increase the rate of seafloor spreading C) Acid decreases the stability of basaltic rocks on the ocean floor D) Acid would be evaporated and create clouds that precipitate acid rain
Mid-latitude waters are generally fresher than polar or subtropical zones because
A. more evaporation, less frontal precipitation. B. less evaporation, less frontal precipitation. C. more evaporation, more frontal precipitation. D. less evaporation, more frontal precipitation.