When a nonrenewable resource is completely exhausted, humans can rarely find a substitute.
Answer the following statement true (T) or false (F)
False
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What is the main reason why the oceans are salty?
A) The early oceans were salty because comets are dirty snowballs. B) Salt deposits that formed early in Earth's history become dissolved by modern oceans. C) Weathering of rocks releases chemical elements that make the oceans salty. D) Blowing salt crystals become incorporated into clouds and falls with the rainfall.
Outline the equilibrium theory of tides, including its assumptions. What will be an ideal response?
Why was the feeding strategy of Riftia worms such a mystery to scientists when they were first
discovered? a. These worms have no mouth. b. These worms have no digestive tract. c. These worms have no anus. d. All of these choices
Ecologists study:
A. The Earth and its processes B. Living things and their genetic makeup C. The physical world and its processes D. Relationships between organisms and their environment E. Genetic patterns and the chemistry in them