In cod fishing, older and larger fish are more likely to be retained in nets than younger and smaller fish. despite the removal of these large breeders, the population is still reproducing. how do you think cod characteristics have changed due to the selection pressure from over-fishing?
a. selection has led to increased growth rates. b. selection has led to decreased growth rates. c. selection has led to increases in the age of fish at the age of reproductive maturity. d. selection has led to decreases in the size of fish at the age of reproductive maturity.

When explaining dominant and recessive traits to a younger family member, they respond, "well chances are i can probably taste ptc, since dominant traits are more common." how might you address this misconception?

Based on anatomical similarities, to which modern animal is dr. digger’s creature most closely related?

1. emigration the movement of people from one place to another 2. immigration a situation in which resources are being used up at a faster rate than they can be replenished 3. migration the leaving of one's homeland to settle in a new place 4. overpopulation the movement of people to a new country 5. sustainable development a situation in which the birth rate is not sufficient to replace the existing population 6. underpopulation the ability to meet current needs without reducing the ability to meet future needs 7. unsustainable development the increase in the population of a city 8. urbanization a situation in which the number of people exceeds the available natural resources in an area