Question

which adaptation helps animals live best in a cold, snowy place? choose the answer that considers survival probability and the total number of offspring. animals with thick, dense fur and body fat have an 80% chance of survival. they produce 400 offspring. animals with long, slender legs and no body fat have a 40% chance of survival. they produce 120 offspring. animals with medium fur but no extra fat have a 50% chance of survival. they produce 200 offspring. animals with short, thin fur and extra fat have a 30% chance of survival. they produce 100 offspring.

Explanation:

Step1: Calculate expected number of offspring for each option

Expected number = Survival - probability×Number of offspring

Step2: Calculate for first option

For animals with thick, dense fur and body - fat: $0.8\times400 = 320$

Step3: Calculate for second option

For animals with long, slender legs and no body - fat: $0.4\times120=48$

Step4: Calculate for third option

For animals with medium fur but no extra fat: $0.5\times200 = 100$

Step5: Calculate for fourth option

For animals with short, thin fur and extra fat: $0.3\times100 = 30$

Answer:

Animals with thick, dense fur and body fat have an 80% chance of survival. They produce 400 offspring.