Multiple Choice
The atoms that make up the molecules in our bodies
A) have nearly all been on Earth throughout its entire history.
B) were all formed recently by nuclear fusion on the sun.
C) were once part of a dinosaur.
D) will be lost back to space soon after we die.
E) came from a wooly mammoth.
Correct Answer:

Verified
Correct Answer:
Verified
Q40: Burning high-sulfur coal increases acid deposition.
Q41: Which nutrient cycle lacks an atmospheric reservoir?<br>A)
Q42: Which trophic level has the LEAST biological
Q43: A carnivore is usually a(n)<br>A) secondary producer.<br>B)
Q44: The present range of the sugar maple
Q46: Organisms that produce their own food in
Q47: Sulfur dioxide is a natural product of
Q48: Many climatologists blame the recent extremes in
Q49: In an area with nitrogen-poor soil, legumes
Q50: This graph, which is based on estimates