What gas is released in the process of smelting?
A. Carbon monoxide
B. Carbon dioxide
C. Sulfur dioxide
D. Chlorine
E. Ammonia
Answer: C
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Given the following components:(1) lions and zebras(2) carbon dioxide and oxygen(3) grass(5) decomposers(6) the sun(7) nutrients(8) soil, air, and waterWhich are needed to have a functioning ecosystem?
A. All of them. B. Only 2, 3, 7, and 8 C. Only 1, 3, 5, and 7. D. All but 2.
A playa forms by ____________________ of a playa lake. Fill in the blank(s) with the appropriate word(s)
Scientists know that the outer core of the Earth is liquid because S waves have not survived travel through the Earth's interior
Indicate whether the statement is true or false
Which of the following is NOT an erosional feature formed by an alpine glacier?
A) Cirque B) Col C) Horn D) Drumlin