What are the elements in the "A" columns of the period table called?

A) main group elements
B) inner transition elements
C) metalloids
D) transition elements


A

Environmental & Atmospheric Sciences

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A considerable variation in seismic wave velocity in the crust occurs because

A) there are different types of rocks in the crust. B) waves move slower the deeper they travel. C) waves move faster the deeper they travel. D) oceans, caves, karst regions, and underground waterways inhibit wave movement.

Environmental & Atmospheric Sciences

Soils that are a result of intense weathering and are typically found in the tropics are

____________________. Fill in the blank(s) with the appropriate word(s).

Environmental & Atmospheric Sciences

Explain why a spring tide occurs every two weeks

What will be an ideal response?

Environmental & Atmospheric Sciences

Cardiovascular disease is strongly related to which of these dietary factors?

A. Protein imbalances B. Vitamin deficiencies C. High salt and fat intake D. Excessive calorie consumption E. A lack of cruciferous vegetables

Environmental & Atmospheric Sciences