The beginning of the Precambrian era is marked by the appearance of the first life forms with hard parts
Indicate whether the statement is true or false
FALSE
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The Cretaceous extinction event was uniformly disastrous to all marine and nonmarine organisms
Indicate whether the statement is true or false
What causes the formation of distributary channels?
A) The stream clogs as the coarsest bedload is deposited. B) The stream loses power as it widens. C) The stream joins an ocean, sea, reservoir, or lake. D) The stream meets an area where the underlying rock is much harder than the rock before it.
The Comprehensive Development Project (CODEP) is working with nearly 650 farmers in Haiti to reforest the area's ________
A) farm fields B) coast C) city D) town E) watershed
The Aral Sea is ________
A) an arm of the Pacific Ocean B) the largest lake in the world C) becoming larger D) about to disappear E) in Saudi Arabia