Section 3, Part B

Question 1

population growth under ideal circumstances with no environmental limitations

Answer 1

exponential growth

Question 2

describes population growth when it is limited by environmental factors

Answer 2

logistical growth

Question 3

under what circumstances does exponential growth occur?

Answer 3

when a species inhabits a new area or is recovering from a density independent disaster

Question 4

Density dependent Factors

Answer 4

if population becomes too large, natural processes will kick in to level out growth eg lack of food due to over consuption

Question 5

Density independent factors

Answer 5

factors that limit population size due to factors unrelated to population density eg tornados, fires, nuclear winter

Question 6

Human population now (2014)

Answer 6

7 billion

Question 7

Estimated human population at leveling out

Answer 7

10 billion

Question 8

by when should human poulation level out

Answer 8

end of the century

Question 9

what can aid in limiting human population

Answer 9

contraceptives, education on contraceptives, limit amount of children a family can have

Question 10

population density

Answer 10

a measurement of population per unit area or unit volume

Question 11

intrinsic rate of increase (rmax)

Answer 11

The rate at which a population increases in size if there are no density-dependent forces regulating the population is known as the intrinsic rate of increase.

Question 12

carrying capacity (K)

Answer 12

the maximum population size of the species that the environment can sustain indefinitely, given the food, habitat, water and other necessities available in the environment

Question 13

age structure diagram

Answer 13

graphical illustration that shows the distribution of various age groups in a population