The answer for "What is petrified wood made of?" would be minerals.
Answer:
on Hudson Bay and extending for 8 million square km (3 million square miles) over eastern, central, and northwestern Canada from the Great Lakes to the Canadian Arctic and into Greenland, with small extensions into northern Minnesota, Wisconsin, Michigan, and New York, U.S.
Answer:
Human activities may affect the physical environment, and the physical environment may affect human activities.
Explanation:
Geography is everything to human activities. The Fertile Crescent is incredibly important for the start of civilizations. Humans also affect the environment, like deforestation and mining.
Answer:
C
Sedimentary rocks can be dated using radioactive carbon, but because carbon decays relatively quickly, this only works for rocks younger than about 50 thousand years
