<u>Stromatolites are layered mounds of calcium carbonate that were deposited by algae during the Precambrian time.</u>
Answer: Option C
<u>Explanation:</u>
Stromatolites are the deposit of the layer which is mostly of limestone and these are mainly formed by the blue green algae which are only one celled organism of primitive times.
The features of these are that they are normally thin and have layers that might be either light or dark in color and are either flat or some of them even have a shape of a dome.
<u><em>China financed a large new fleet sent out to trade and build contacts under the command of Zheng He.</em></u>
Answer: Option C
<u>Explanation:</u>
- Ming dynasty is the one and only first Chinese dynasty that showed interest in trading with other countries. Zheng He was a great sea explorer who is also a fleet commander.
- He established trades with many foreign countries. He served under the third Emperor Yongle whose reign was between 1402 to 1424. He built big ships (some families can live in) also named them as Junk to travel in the sea.
- That made the Ming Dynasty earn more money. Ming Dynasty was interested only trading with Portuguese and Spain but most of the Europeans wanted to trade wit Asia for spices and teas.
- When Yongle died the funding for the travel was stopped and that was the end of the Ming Dynasty's International trade through seas.
The appropriate answer is B. DIVERGENT. Divergent margins occur where two oceanic plates are pulling apart or it can occur where a Continental landmass is pulling apart.
As oceanic plates pull apart magma up wells from the mantle and new crust is formed along what is called a spreading ridge. The Mid Alantic ridge is an example of a spreading ridge where new oceanic crust is being formed.
Because:
Its far away.
The farther an object it is, the smaller it is.
