Pls Help Describe the characteristics of single replacement reaction, how it is identified, and what determines if this reaction will occur. Give an example in your response.

When a comet collides with earth, it adds material to our planet and causes great damage. therefore, a collision like this is a a. destructive force b. constructive force c. geologic process and event d. constructive and destructive force

Identify and describe the three ways that mutations affect organisms.

The blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?