On a crisp autumn morning, sarah could see a mirror image of the colorful trees in the water of the lake. what causes this mirror image?

The correct answer is reflection.

Explanation:

Reflection: It is the phenomenon in which the light rays bounce back from the surface without getting absorb or transmit.

In the given problem, The image of the colorful trees can be seen in the water of the lake. This is due to the reflection. The light rays will be incident on the colorful trees and then these rays reflected back on the surface of the water. Then these rays converge to form the mirror image of the trees.

Therefore, in the given question, the image causes due to the reflection.

depends on what you mean by "group." for order, it would be coleoptera (beetles). for class, it would be insecta (insects). for phylum, it would be the arthropoda (animals with jointed exoskeletons).

explanation:

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me