Answer: 1. Dwarf Star 2. Helium to Carbon 3. Xray
Explanation: I just took the test. Trust me!!!
The answer to this question would be D.) Permafrost prevents penetration of deep roots.
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Answer:
The length of the two wires
Explanation:
A control variable is what you keep the same through the whole experiment so therefore it could be both length and diameter
Answer:
Eating
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