Chapter 07-Populations

Question 1

population

Answer 1

group of organisms of the same species living in an area

Question 2

population size

Answer 2

in population

Question 3

population density

Answer 3

individuals/area

Question 4

population age

Answer 4

predicts population growth/reproduction

Question 5

population distribution/dispersion

Answer 5

spacing - how individuals are spread out

Question 6

clumped distribution

Answer 6

in groups

near resources or in social groups

Question 7

uniform distribution

Answer 7

evenly spaced

competing for resources

Question 8

random distribution

Answer 8

random!

this is rare

Question 9

growth stage

Answer 9

more births than deaths

Question 10

stability stage

Answer 10

even # of births and deaths, longest stage

Question 11

decline stage

Answer 11

more deaths than births

Question 12

carrying capacity

Answer 12

population size that the environment can support

Question 13

opportunistic (r-species)

Answer 13

reproduce rapidly if below carrying capacity
short life span
many offspring

Question 14

competitors (k-species)

Answer 14

stay at carrying capacity
longer life span
fewer offspring

Question 15

limiting factor

Answer 15

limit population growth rate

Question 16

examples of limiting factors

Answer 16

predators, food shortage, flood, fire

Question 17

method to estimate population

Answer 17

mark and recapture

Question 18

Why does the human population continue to grow?

Answer 18

medical care, more food production, no predators, build shelters, technology

Question 19

invasive species

Answer 19

non-native organisms introduced into an area

Question 20

antibiotic resistance

Answer 20

bacteria are no longer killed by antibiotics

Question 21

How can human populations affect the environment?

Answer 21

habitat destruction, pollution, overhunting, introduce invasive species, global warming