Anoxia or lack of oxygen in bodies of water, lead to

On the map below, which of the following rivers is identified by blue? the huang he river the yangtze river the han river the naktong river

According to the earth science reference tables, during which geologic time period were the continents of north america,south america, and africa closest together?

To solve this system of equations by elimination, what operation could be used to eliminate the y-variable and find the value of x? 6x + 5y = 2 4x + 2y = 8 a) subtract 2 times the second equation from 3 times the first equation b) subtract 3 times the second equation from 2 times the first equation c) subtract 5 times the second equation from 2 times the first equation d) subtract 2 times the second equation from 5 times the first equation