Problem: OPTIONS:
- sixteen
- five
- eight
- six
Q: Q: How many neutrons do 99% of carbon atoms have? A:
Answer: six
Problem: OPTIONS:
- the debris bowl
- the flow bowl
- the land bowl
- the dust bowl
Q: Q: What historical event taught people that soil could be lost by plowing and growing crops and encouraged new methods to prevent erosion? A:
Answer: the dust bowl
Problem: OPTIONS:
- endothermic cycle
- envelop cycle
- abdaspac cycle
- biotic cycle
Q: Q: In what part of the carbon cycle does carbon move between living things and the air? A:
Answer:
biotic cycle