Question

data: survival rates of sea turtle hatchlings
hatchlings released survivors after 1 year survival rate (%)
1000 10 1%
2000 25 1.25%
3000 40 1.33%
multiple - choice questions:

1. what is the main advantage of overproduction in sea turtles?

a) it ensures every hatchling survives
b) it increases genetic variation in the population
c) it guarantees that a few will survive despite predators and environmental challenges
d) it prevents competition among individuals
unit 1 evolution review

1. if a new predator is introduced to the environment, how might survival rates change?

a) they would increase significantly
b) they would decrease due to higher predation
c) they would remain the same
d) predators do not affect natural selection

Explanation:

1. Overproduction in sea - turtles means producing a large number of offspring. Since there are many threats like predators and environmental challenges, overproduction ensures that despite these threats, some will survive. It does not ensure every hatchling survives (a is wrong), and while it may contribute to genetic variation indirectly, its main purpose is survival assurance. It also does not prevent competition among individuals.
2. If a new predator is introduced, more sea - turtle hatchlings will be preyed upon, so survival rates will decrease due to higher predation. Predators are a key factor in natural selection.

Answer:

1. c) It guarantees that a few will survive despite predators and environmental challenges
2. b) They would decrease due to higher predation