An incomplete concept map of carrying capacity is provided.

Which of the following factors would most
accurately be placed in the same side of the concept map as “Increase in population of competitors”?

Group of answer choices:
1. Increase in reproductive success

2. A decrease in available living space

3. Increase in availability of freshwater

4. A decrease in population of predators

Which of the following elements does soil need in the largest quantities to sustain plant life? a. copper b. iron c. nitrogen d. zinc

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

The part of the eye that closes and opens to let light in is .