Which of the following is not true of mutations?

a. mutations can't result in a change in appearance.
b. a mutation is permanent.
c. mutations can be passed from parent to child.

A. Mutations can't result in a change in appearance.

Explanation:

A mutation is a sudden change in DNA that occurs at random in genetic material and can be transmitted to offspring. A mutation can also be caused by exposure to ultraviolet or ionizing radiation, chemical mutagens, or viruses. When the mutation occurs, it is permissible and continues with the individual until the day of death, as it is irreversible as it has modified the coding of DNA. When a mutation occurs, it can cause differences in the appearance of the individual, such as Down's syndrome, which changes not only the appearance, but the organism altogether. Therefore, we can consider that the answer to your question is the letter A.

less than one you can't create energy

54 degrees incident angle = reflected angle

angle is from normal turned to line of ray