If you would like see if it is okay see if you can write about Obama's goodbye message. Hope this helps! :)
Answer:
Freshwater, Ocean Water, and Terrestrial.
Explanation:
These are the broadest 'three types of ecosystems' that come to mind.
Answer:
Correct answer is Wegener had no compelling mechanism to explain what would cause the continents to move.
Explanation:
A is not correct as through his researches he presented his theory to other scientist.
B is not correct as Wegener was very educated, and was even even working as a professor at University.
C is correct that although he presented his theory, he couldn't explain totally how it happened.
D is not correct as during his lifetime his theory wasn't widely accepted. That happened 20 years after his death.
Urbanization became famous during industry revolution. There were factories being built and also there were more agricultural workers attracted to the work available then in the cities and also there were new immigrants that increases the population of the cities.
