The Chondrichthyes include organisms such as ________.
A. hagfish
B. bony fish
C. sharks
D. lampreys
Answer: C
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What are the environmental advantages of recycling?
What will be an ideal response?
About how many calories are required to convert 2 g of ice at 0°C to water vapor at 50°C ?
A. 670 B. 2768 C. 160 D. 1180 E. 1340
There are six Criteria Pollutants.
Answer the following statement true (T) or false (F)
The earth's major layers formed because ________
A) the chemical composition of the solar nebula changed over time B) the earth was heated after its formation resulting in melting and redistribution of major chemical compositions C) the earth's mantle grew like a crystal forming around the earth's core but the crust was exposed to space and stayed more like the original material D) radioactive decay caused materials to change over time and resulted in the layering