Seems very basic, the ocean is above the plate, the plate material is heavier than water (it being rock). That's pretty much all of it. The plates grind a little and new land pushes up at plate boundaries but this does not seem to be related. The heavier material is below and the lighter above, those being rock and water respectively.
Answer: 4. The diseases killed millions of people
Explanation: Europeans carried a hidden enemy to the Indians: new diseases. Native peoples of America had no immunity to the diseases that European explorers and colonists brought with them. Diseases such as smallpox, influenza, measles, and even chicken pox proved deadly to American Indians.
Answer:
True.
Explanation:
In the ancient times the people usually lived in meadows, Plains and forests. There were very few or no crafted houses that we see in the modern world. The plains were used to produce agricultural goods. People use to breed their domestic animals near their homes. Their homes were usually built by wood which they use to scratch from trees.
A very important feature in partly in the Sub-Sahara of Africa is the Great Rift Valley which stretches for about 6000km from Syria to Mozambique is a block faulted valley, 30 to 60 miles wide which represents a rift in the African plate of plate tectonics, similar to the ones under the ocean like the mid-Atlantic ridge. It has fertile soil in it, partly from volcanoes like Mt Killimanjaro, and also many large lakes like Lake Tanganyika, It provided a rich environment due to the soil and the lakes for example, for the Bantu people in the past, many of which had their kingdoms here. Ancient human remains have been found in it's soil by Richard Leakey.
