The Earth contains about 434 billion cubic meters of growing stock forest, 47% of which is commercial. As an abundant, carbon-neutral renewable resource, woody materials have been of intense interest as a source of renewable energy. In 1991, approximately 3.5 cubic kilometers of wood were harvested. Dominant uses were for furniture and building construction. COUNT 5
QSN1 How many cubic meters of growing stock forest are there on the planet? ANS1 434 billion QSN2 What percentage of the Earth's stock forest is commercial? ANS2 47% QSN3 In addition to buildings, what is wood often used to make? ANS3 furniture QSN4 About how many cubic kilometers of the vast stock forest's wood were harvested in 1991? ANS4 3.5 QSN5 In addition to being carbon neutral, what other adjective describes wood that makes it compelling as a renewable energy source? ANS5 abundant