What is the age of the Earth accepted by most scientists today?
A) 4.5 million years B) 4.5 billion years C) 6.4 billion years D) 6.4 million years
B
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Which of the following are types of waste that a homeowner can recycle in their backyard as part of a composting project?
a. hedge trimmings b. food scraps c. grass clippings d. discarded paints and stains e. all of these except discarded paints and stains
Which of the following forest products would you expect to have the best potential for sustainable use?
A) garden mulch B) paper C) pharmaceuticals D) firewood E) building materials
Scientists have known for many years that carbon dioxide acts as a _______________ gas, impeding outgoing longwave radiation emitted by the Earth
Fill in the blank(s) with correct word
The progress of science is mainly happens when a scientist working in isolation and discovers something very important.
Answer the following statement true (T) or false (F)