Answer:
A. Cambrian explosion , Active plate margin, True.
Explanation:
- The burgess shale is a window into life on earth during the exposition of Canadian Rockies. Itis one of the earlier imprints containing the soft part imprints.
- Fossil deposits of burgess shale correlate to the Stephen formation. that were collected about 508 million years ago. Beds were deposited at the base of the cliffs 160 meters tall.
- North American plate is considered as an active plate margin, as this margin is moving westwards. And the pacific plate is shrinking in size. The presence of Icelandic Arcand festoons depicts this.
- The laptus ocean in the paleozoic era was an Icelandic volcano found in the ancient oceanic crust of ophiolites of Newfoundland. This ocean was earlier also named as the titan impetus.
Answer: Yes, Herculaneum, an ancient city in Campania, Italy.
Explanation:
Answer:
Correct answer is the Eastern Mediterranean and Middle East.
Explanation:
First option is not correct as Venice wasn't opened towards the Atlantic Ocean and actually lost its influence when the New World was discovered.
Second option is also not correct as the connection to this countries went through Atlantic Ocean.
Third option is also not correct for more or less the same reason and because Venice focused on maritime trade, which means that they didn't trade much with them as they as this countries are located in Central Europe.
Answer:
C. temperature and salinity
Explanation:
The circulation of the water in the oceans is driven by the temperature and the salinity. It is a relatively simple principle that creates the movement of the water and creates the ocean currents.
The cold water is denser, so it sinks deeper. The cold water has lower salinity as well, as the evaporation in the higher latitudes is lower. It moves toward the lower latitudes in the form of deepwater currents, or better said it is moving toward areas with less dense water and pushes the water with smaller density. As this water gets to areas that are warmer it starts to warm up. Becoming warmer and warmer makes it less dense, the salinity constantly increasing because of the evaporation, so it is pushed up toward the surface.
Once it reaches the surface, the water is becoming even warmer and less dense, so in the form of surface currents it starts to move toward the higher latitudes. This continues to happen constantly, with periodic changes in the patterns of the currents, which depends a lot on the global climate and the position of the continental masses.
