In three to five sentences, 1) calculate the average weights of the two rabbit breed groups, 2) describe some factors that could contribute to the different weights seen within breeds, and 3) describe how you would track and find the growth rate of the two rabbit breeders during an investigation.

1) To calculate the average weights of the two rabbit breed groups, we would add up the weights of all rabbits within each breed group and then divide by the total number of rabbits within that group. Let's say Breed A had 10 rabbits weighing 5, 6, 7, 8, 9, 10, 11, 12, 13, and 14 pounds respectively, and Breed B had 8 rabbits weighing 4, 5, 6, 7, 8, 9, 10, and 11 pounds respectively. The average weight of Breed A would be (5+6+7+8+9+10+11+12+13+14) / 10 = 9.5 pounds, and the average weight of Breed B would be (4+5+6+7+8+9+10+11) / 8 = 7.375 pounds.

2) Factors that could contribute to different weights within rabbit breeds include genetics, diet, exercise, age, and overall health. Some rabbits may have a genetic predisposition to be larger or smaller in size, while others may be affected by their diet or lack of exercise leading to weight differences. Age can also play a role as younger rabbits may still be growing and developing their muscle mass and bone structure, while older rabbits may lose muscle mass and bone density as they age.

3) To track and find the growth rate of the two rabbit breed groups during an investigation, we would need to regularly weigh each rabbit and record their weights over a specific time period (e.g. weekly or monthly). By comparing the weights of individual rabbits over time, we can calculate their growth rates and determine if there are any significant differences between the two breed groups. Additionally, we could also track factors such as diet, exercise, and overall health to see how they may be influencing the growth rates of the rabbits.