Answer: D
Explanation: Newton’s Law. The more mass two objects have, the greater the force of gravity the masses exert on each other. If one of the masses is doubled, the force of gravity between the objects is doubled.
Answer
1.Canada has more natural lakes than the rest of the world combined. There are 31,752 major lakes in Canada.
2. Sudan - the nation of Sudan has 220 extant pyramids
3. there are only two active volcanoes in Antarctica – Mount Erebus (due south of New Zealand) and Deception Island (south east of Cape Horn, South America).
I would say the topic of such a study would be paleomagnetism and perhaps its effect on plate tectonics because when the seafloor spreads at the mid-ocean ridges, magnetized stripes of rock, symmetrical on either side of the trench form and they record changes in the earth's magnetic poles at certain times so can be dated to help show the rate of spreading of the seafloor at these locations.
