Answer:A student gathered four trays and four different kinds of rock samples — granite, limestone, marble, and sandstone. She tilted the trays, put a rock sample on the top end of each tray, and used a pump to force water continuously through a tube over the rocks for four days (96 hours). She collected data and recorded observations of each rock sample at the end of each day. The purpose of the student’s investigation is to determine —
Explanation:
Answer: 4
2x2 is 4 and that is the same thing as 2+2.
Answer:
Overall the countries of Equatorial Africa have a total population of 75.4 million.
Answer:
Appalachian Mountain Range
Explanation:
The Appalachian Mountain Range runs through most of the Eastern United States, and had previously served as the border for the 13 colonies back in the colonial age.
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