Geology Help? Can anyone translate these questions with more simple words?

Question

Could you translate these 3 questions? I'm having a hard time understanding. NOT having a hard time for "answering" but "understanding questions." I am not native english speaker, and my science English language skill is about 10 year old...If you ask these questions to 10 year old kid, how would you ask??

2: Give a detailed explanation for the drop off (decrease) of species diversity during continental collision?

3: The plant Metasequoia disappeared from North America during the Miocene. After being found alive in China, the species has now been replanted in all the continents of the world where it is a hardy species. What does this suggest?

4: The Tethys Seaway extended from the western Mediterranean all the way across northern India (the Himalayas) to the Pacific. This oceanic strip was narrower than the present Atlantic, yet faunal migrations back and forth across it were far more easily made than faunal migrations from the north and south Atlantic. Why is this?

Answer 1

2. Explain why different species died out when the continents on earth came together.

umm i dunno the forst one is easy tho

Answer 2

2. Why do the combined total number of species found on continent  A and Continent B drop off (decrease) if the two continents collide (crash into) each other?

3. The giant tree called Metasequoia disappeared from North America during Miocene time. But it didn't disappear from all places in the world, because some living Metasequoias were found in China. These were planted on continents around the world and they are doing very well (hardy species). What might this information tell you about the climate history of the world or the geographic history of this plant?

4. Something is wrong with the way the original question is phrased. the second sentence doesn't make sense: Millions of years ago, the Tethys Sea was a narrow seaway that went east-west all the way from northern India to the Pacific Ocean. This ancient seaway was narrower than the modern day Atlantic. Animals (faunal) migrated across it  more easily than migrations from the north and south Atlantic [this part doesn't make sense--does questioner mean from east to west Atlantic? does questioner mean from northern hemisphere to southern hemisphere along modern Atlantic coastline? ].

Answer 3

My son is 10 and I am always explaining science, hope it helps..

2) Because the earth's plates are moving very slowly during plate tectonics, sometimes they meet each other (they collide).  When they collide, a result is that the numbers of animal species decreases (meaning many species go extinct.) What would cause some species to go extinct? (give details how...)

3) The Metasequoia is a large tree that used to be found on many continents around the world before the Miocene age.  This tree was in the continent of North America but it went extinct here (disappeared) during the Miocene Age (23.03 to 5.33 million years ago).  It did not go  extinct in China.  Now the tree is doing very well growing all over the continents of the world.  Why do you think this plant is doing so well?

4)  There was a part of the ocean that used to be on what is today land.  This used to be from where the Med. sea is across into Asia all the way to the Pacific.  This part of the ocean was narrower than today's Atlantic Ocean, and aquatic animals used to migrate across this strip of Ocean easily.  Even though the Atlanic is much bigger, it is still harder for aquatic animals to migrate from the North to the South Atlantic than it was for animals to migrate in this old waterway.  What makes it hard for aquatic animals to migrate south in the Atlantic Ocean?