Calculate the hydroxide ion concentration of the following solution: 2.7 x 10 ^ 9 M HClO4

help!

tracks, burrows, eggshells, nests, tooth marks, or gastroliths

thats a little if u want the answer just look it up on google thats what i do haha : )

geosphere and hydrosphere.

this is because the geosphere has to do with geological events, while the hydrosphere controls all water on earth.

one negative thing it that it can kill water animals. another negative thing is it can cause the destruction of ecosystem. one way water pollution can be reduced is to conserve energy.