Explain why the inner region of our solar system lost its lightweight gas molecules during planetary accretion
What will be an ideal response?
The solar wind blew lightweight gas molecules out of the nebula except where they were already bound to the outer planets.
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Human population is currently following a J-shaped growth curve. Which of these hypothetical factors would maintain this growth pattern and prohibit the growth curve from turning into an S-shaped one?
A. New medicines to stop the spread of disease B. Better farm machinery C. New fossil fuel supplies D. Improved factory fishing boats
What is a disadvantage of using tidal power?
A) It has high operating costs. B) It requires a large amount of man power. C) It cannot sustain the world's needs. D) It adds pollutants to the air.
What type of plate boundary is associated with a rift?
A. convergent B. new C. transform D. divergent E. old
What is meant by population momentum and what is its cause?
What will be an ideal response?