What is the lowest point of a wave called?

amplitude
crest
frequency
trough

Trough

Explanation:

We need to answer the following questions

What is a wave?

A wave refers to a transmission of a disturbance from one point to another. It involves transfer of energy from the source to other points.

What are the major types of wave?

Waves may be classified as longitudinal waves or transverse wave based on the vibration of particles relative to the direction of transmission.

What is a transverse wave?

A transverse wave is a wave in which the vibration of particles is perpendicular to the direction of transmission of the wave.This type of wave contains highest points known as crests and lowest points known as troughs.

Ibelieve y y even though i've only taken chemistry for one year

Combustion is the act or process of burning. therefore, i believe the answer is  a: burning wood.