Question

lab: natural selection
step 5: use the data to model the sizes of the flocks in the second generation

• divide each flocks total pieces of food by 300, the total number of pieces of food eaten.

** multiply the food percentage for each by the total number of birds (30).

Explanation:

Step1: Calculate food percentage

For Flock X: $\frac{123}{300}\times100 = 41\%$
For Flock Y: $\frac{99}{300}\times100 = 33\%$
For Flock Z: $\frac{78}{300}\times100 = 26\%$

Step2: Calculate simulated number of birds

For Flock X: $0.41\times30 = 12.3\approx12$
For Flock Y: $0.33\times30 = 9.9\approx10$
For Flock Z: $0.26\times30 = 7.8\approx8$

Answer:

Food Percentage: Flock X - $41\%$, Flock Y - $33\%$, Flock Z - $26\%$; Simulated Number of Birds: Flock X - $12$, Flock Y - $10$, Flock Z - $8$