QUESTION 3 Which statement is WRONG about electromagnetic waves?
A. Electric field is perpendicular to magnetic field.
B. Vibration of electric fields is perpendicular to propagation direction.
C. Different visible waves show different colors.
D. Different waves propagate in different speed.

Different visible waves show different colors

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.

answer; capital earns interest; entrepreneurship receives a profit or incurs a loss;