The earliest large structures of significance were the ____ built by Egyptians and Native Americans.
A. arches
B. pyramids
C. roads
D. castles
Answer: B
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Suppose you want to make a 10 percent solution (by volume) of colored water
Your teacher tells you that the final volume of the 10 percent solution is 1 liter. Describe how you would make the solution. How much water would you use to dilute the colored solution? How much of the original solution would you use?
What will be an ideal response?Aquatic plants are vital to the health of freshwater habitats
a. True b. False Indicate whether the statement is true or false
During the past 30 years, per capita food production increased in developing countries of all regions but Asia
Indicate whether the statement is true or false
Pure water has an equal amount of positive and negative ions, and therefore is considered neutral.
Answer the following statement true (T) or false (F)