Lighter elements (atomic number less than 5) were created by:
a) Accretion during nebula formation
b) Nuclear fusion during or right after the Big Bang
c) Nuclear fusion within earliest stars
d) Nuclear fusion during supernova
e) Nuclear fission within stars
Ans: b) Nuclear fusion during or right after the Big Bang
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Mount Everest’s summit is 8850 m (29,035 ft) above sea level. What is the barometric pressure there, according to the standard atmosphere?
Using the graph you prepared in Figure 10.2, list the approximate answers to the following, assuming standard atmosphere conditions. The first answer is provided for you in brackets.
Ob, Yenisey and Lena are
A. female heroes of the Russian Revolution. B. major rivers than run through Siberia. C. the first post-Soviet Union prime ministers of Belarus, Ukraine and Molova. D. sites of major manmade environmental catastrophes.
The latest information tells us that salvage logging ________
A) eliminates wildfires from forests B) causes increased soil erosion C) tends to provide additional food and habitat for many types of wildlife D) has no effect on the severity of wildfires E) decreases long-term timber yield by more than 60%
Choose an endangered or threatened animal or plant species, and use the Internet to research what is currently being done to preserve it. What dangers is your chosen species subject to?
What will be an ideal response?