In recent years, concern has grown that with ongoing climate change, certain parts of the Earth atmosphere system may be reaching tipping points, or conditions in which the pace of change may increase rapidly and irreversibly
Indicate whether the statement is true or false.
Answer: TRUE
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Natural glass such as obsidian forms when ____
A)magma cools too rapidly for crystals to form B)pegmatite melts, moves to Earth's surface and ,re-forms C)magma cools too slowly for crystals to form D)magma has a very low silica content E)gas escapes through lava
Rice
A) was domesticated in East Asia more than 7000 years ago. B) is used almost totally for human consumption. C) is the primary diet ingredient for over 2 billion people. D) all of the above E) B and C only
Sometimes the political situation in a country does not meet the requirements for various types of foreign aid, so the country institutes just enough changes to meet the requirements, without producing real reform for human rights or democracy. What is this phenomenon is called?
a. cultural conditioning b. conditional lending c. money grabbing d. donor democracy e. extortion lending
Continental shelves on active margins are larger and broader than those on passive margins
Indicate whether this statement is true or false.