How can a molecule have polar bonds but be a non-polar molecule?

In symmetrical molecules, for example CO2 which is linear, the polarity of each bond cancels out, and the overall molecule is non polar, despite both individual bonds being polar. ... This can happen if there is a centre of symmetry in the molecule. The molecule has a dipole moment based on the total charge distribution.

Explanation:

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.

the correct answer would be b. amelia, because the particals of gas move really fast (charged particals) and gas also has a lot of room (particals move independently) so the only answer that has both of those is amelia's.