What are the typical products of volcanic eruptions?
a. molten rock (Lava) and pyroclastic debris
b. magma
c. gas and aerosols
d. all of the above
e. both a and c
Ans: e. both a and c
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An ecosystem is an example of a(n) _______________ system since energy and matter are freely exchanged at its boundaries
Fill in the blank(s) with correct word
Organic farming is more sustainable however the food produced costs more than that produced by industrialized agriculture. How can you justify the increased cost of organic food?
What will be an ideal response?
Hurricanes die over land because they
A) no longer generate energy by the condensation of water vapor. B) experience friction with the land surface. C) cannot absorb enough water vapor to sustain their mass. D) cannot travel long distances.
The cycle of phases of the Moon is the basis for our month
Indicate whether the statement is true or false