The greenhouse effect is related to the phenomenon of an increase in average surface temperature known as

a. global warming.
b. air pollution.
c. conservation.
d. agricultural improvement.

Which statement describes john tuzo wilson’s contribution to the theory of plate tectonics? he proposed that plates carry parts of the seafloor. he theorized that pieces of earth move for a limited time. he suggested that the asthenosphere is broken into segments. he observed seafloor cracks similar to existing cracks in the continents.

Which of the following best describes asbestosis?

Rocks that contain crystals that are roughly equal in size and can be identified with the unaided eye are said to exhibit a texture.