As the Amplitude of the wave decreases what be does the frequency do

It’s b. mass i searched it up

Read the sentences below in 1962, i tried to enroll as the first black student at the university of mississippi. the governor of mississippi blocked my entrance which best describes the verbs used in the sentences? o they are past tense verbs, which are often used in narrative essays o they are past tense verbs, which are not often used in narrative essays. o they are future tense verbs, which are often used in narrative essays o they are future tense verbs, which are not often used in narrative essays.

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

The second and last option are the answers