A food chain is one that includes a primary producer at the lowest trophic level and a herbivorous primary consumer at the second trophic level. renr 205

Flock x flock y flock z total pieces of food eaten (from previous page) 147 93 60 food percentage* % % % simulated number of birds in flock for 3rd generation** * divide each flock's total pieces of food by 300, the total number of pieces of food eaten. ** multiply the food percentage for each flock by the total number of birds (30).

Anormal strand of dna is shown below, followed by the same strand of dna after mutations have occurred.

What does the number 18.9984 represent in the image?