The majority of the Earth's carbon is stored in ____________________
Fill in the blanks with correct word
marine sediments
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Which product is commonly grown in plantation agriculture?
A. beets B. corn C. wheat D. alfalfa E. coffee
All of the following except ________ would result in improved energy-use efficiency
A) buying more SUV motor vehicles B) tax credits for installing geothermal heating in your home C) rebates for building energy-efficient buildings D) buying high-efficiency appliances E) tax credits for insulating and putting double pane windows in existing buildings
Electromagnetic radiation is generated from all of the following EXCEPT.
A. changes in the energy level of the electron. B. the joining together of protons and neutrons through fusion. C. molecules' electrons and bonds that vibrate. D. unconfined waves that radiate out in all directions.
Why do scientists consider any hypothesis valuable?
A) A hypothesis requires no further investigation if it is proved by the experiment. B) A hypothesis can be used to explain a conclusion even if it is disapproved by the experiment. C) A hypothesis requires no further investigation. D) A hypothesis may lead to further investigation even if it is disapproved by the experiment.