The core of the Earth is composed primarily of:
a. nickel
b. uranium.
c. metallic hydrogen.
d. iron.
d
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According to the textbook, world food production has increased primarily by expanding the amount of land devoted to agriculture
Indicate whether the statement is true or false.
Why do most earthquakes occur along the circum-Pacific belt? What will be an ideal response?
A rapidly moving ocean wave generated by an earthquake that is capable of inflicting heavy damage in coastal regions is called a(n) ________
A) syncline B) tsunami C) subsidence D) anticline
Ability to break off body parts and regrow them later is an adaptation to cope with which of the following adverse conditions of the rocky intertidal zone?
A) Difficulty finding mates B) Drying out during low tide C) Lack of space or attachment sites D) Predators E) Strong wave activity