Question

1. which of the following best describes the number of individuals which migrate out of a population over a period of time?

a. immigration
b. fertility
c. emigration
d. birth

1. complete the model using the following: birth, emigration and immigration.

birth
immigration → abundance → emigration
↓
death

1. mark the following statements as true or false.

disease is an abiotic factor. t or f
fertility refers to the natural capacity to and the number of offspring produced. t or f
recruitment is not affected by immigration. t or f

1. emigration rates can be due to a habitats ______.

a. translocation
b. limited-carrying capacity
c. decomposers
d. food chain

8.. which of the following is not a permanent mark used in the mark and recapture technique?
a. ear tag
b. paint
c. tattoo
d. leg band

Explanation:

1. Emigration is the movement of individuals out of a population.
2. The model shows factors affecting population abundance: birth adds individuals, immigration adds individuals, emigration removes individuals (the given labels match the model structure).
3. Disease is biotic (living factor); fertility refers to offspring production capacity; recruitment (new individuals) includes immigrants.
4. Limited carrying capacity (max population habitat supports) causes emigration.
5. Paint is temporary; ear tags, tattoos, leg bands are permanent marks.

Answer:

1. C. Emigration
2. The model is already correctly labeled with Birth, Immigration, and Emigration.

6.

Statement	T or F
Fertility refers to the natural capacity to and the number of offspring produced.	T
Recruitment is NOT affected by immigration.	F

1. B. Limited-carrying capacity
2. B. Paint