The scientific theory for the origin of our solar system, involving the condensation and collapse of
interstellar material in a spiral arm of the Milky Way galaxy, is the ____________________ theory. Fill in the blank(s) with the appropriate word(s).
solar nebula
Environmental & Atmospheric Sciences
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The first fish evolved about 50 million years ago. Indicate whether the statement is true or false
Environmental & Atmospheric Sciences
Which of the following is most porous?
a. sand b. soil c. gravel d. silt e. clay
Environmental & Atmospheric Sciences
The infectious disease that poses the greatest risk of death for people living in northern Eurasia and Africa is
A) tetanus. B) measles. C) tuberculosis. D) hepatitis.
Environmental & Atmospheric Sciences
In what climate(s) is solifluction prevalent?
A) Topics B) Tundra and subarctic C) Arid D) Temperate and humid
Environmental & Atmospheric Sciences