Answer: 2. The plants and animals diffused to a region with climate and geography similar to that of their point of domestication.
Explanation:
Knowledge of the centres of origin of plants and animals has increasingly improved. it is much harder to identify the way through which plants and animals were distributed, by what roads and what means they arrived at one place or another, who brought them and who diffused them.
One very important note is that plants and animals diffused to a region with climate and geography similar to that of their point of domestication which makes them survive and develop to the stage of harvest.
Answer:
b less dense and thicker under the continents than under the oceans
Explanation:
- <em>Oceanic crust </em>is found under the ocean, it's about 6 kilometers thick and is destroyed in subduction zones just like the continental crust. It's composed of several layers and it differs from continental crust because it's thinner, denser, younger and with a different chemical composition (olivine, pyroxene, and amphibole).
- <em>Continental crust</em> is thicker (100 kilometers) and less dense than oceanic crust, it resists subduction and its age is 30 times the average of the ocean's age.
Considering this information we can conclude that the correct asnwer is: b less dense and thicker under the continents than under the oceans.
I hope you find this information useful and interesting! Good luck!
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Answer:
Why the majority of species live on earth and not in the sea is one of the top questions of science. The following are some of the reasons some scientists quote:
- plants play a major role; plants need light for photosyntesis, there is little sun in the ocean except for shallow coastal areas; so, land is more productive than the cold, dark depths of the ocean;
- the co-evolution of plants and insects has also played a role in the birth of so many new species; the vast majority of plants on Earth are flowering plants and 80 percent of all species are insects.
Explanation:
The Battle of the Atlantic took place throughout the northern region of the Atlantic Ocean. Once the United States entered the war the battle spread all the way to the coast the United States and the Caribbean Sea. The battle lasted over 5 years and 8 months from September 3, 1939 to May 8, 1945. The control of the Atlantic had a major impact on the outcome of the war. Keeping Britain supplied helped to keep the Germans from taking over all of Western Europe. The losses in the battle were staggering. Over 30,000 sailors were killed on each side. The Allies lost around 3,500 supply ships and 175 warships. The Germans lost 783 submarines.
Fun Facts:
Winston Churchill first called it the "Battle of the Atlantic" in 1941.
It was estimated that at least 20 supply ships needed to arrive each day in Britain in order for them to continue to fight the war.
The Allies lost 1,664 supply ships in 1942.
The Germans sometimes used a "wolf pack" tactic where a number of submarines would surround and attack a supply convoy at once.
Allied planes used a large spotlight called the Leigh Light to spot submarines that had surfaced at night.
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