Tectonic plates

Pic is below

Which of the following is not considered one of the four major oceans (1 point)

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

One disadvantage that darwin faces today is w. enemy attacks x. natural disasters y. lack of land bridge z. high population density