Answer:
breed a has an average of 9 pounds
breed b has an average of 12.125 or 12 (rounded) pounds
Factors you may describe could be, food sources, environment, and climate could have changes in the characteristics of different breeds.
Having controlled factors, having 2 baby rabbits of the same breeds and monitoring the same food and water, observations and data can be collected, done multiple times data can be complied and used to theorize
Answer:
enzyme
Explanation: enzyme is produced by a living substance which acts like a catalyst to bring about a specific biochemical reaction