1.) what kind of evidence do scientists use to locate boundaries of plates and interpret what type of boundary is present?
a.) matching fossil records
b.) similar rock layers
c.) distribution of earthquakes and volcanoes
d.) the way the continental coastlines fit together like a puzzle

2.) scientists knew that earth was not getting bigger as new crust was formed at the ridges. what did the discovery of oceanic trenches scientists understand?

a.) that the crust was made of 9 tectonic plates
b.) that the crust could be created and destroyed
c.) that the crust was made of a plastic-like substance
d.) that the crust was thicker in some places than in others

3.) most earthquakes and volcanoes on earth occur in the atlantic ocean along the ring of fire.

true
false

Which of the following is not a challenge to instituting sound global environmental policies? a. most changes are inexpensive and easy to implement. b. elected leaders who support unpopular environmental issues often are not re-elected. c. economic considerations outweigh environmental ones in many societies. d. there is no way to enforce international environmental agreements.

Which statement about factories in the industrial revolution is not true? a) some of the first advances were in textile mills b) spinning machines used water power c) water power was replaced by steam power d) coal was imported to english factories for power answer d) coal was imported to english factories for power

Ineed this answered asap the north korean communist government a. controls crop production and distribution. b. is not involved in crop production and distribution. c. exports its huge rice surplus to other countries. d. allows farmers to choose which crops to grow but controls where the crops are sold. which statement below is true? a. east asian nations are members of nafta. c. industry and production is not an important aspect of east asian economics. b. east asian nations are economically independent. d. the economies of most east asian countries are mixed or market systems. what is the main idea of this passage? a. the city of hiroshima can never fully recover from the atomic bombing of 1945. b. hiroshima is more modernized than any other city in japan. c. after being bombed, hiroshima was rebuilt and became a thriving urban port. d. the city of hiroshima has an extensive park system dedicated to peace.