For each pair of terms, explain how the meanings of the terms differ. porosity and permeability

Which of the following uses of wood is the most important for basic human needs? a. heating the home b. boiling water c. making tools d. building shelter

How much has the average global temperature increased in the last 120 years? (a) $0.6^{\circ} \mathrm{F}$, (b) $1.0^{\circ} \mathrm{F}$, (c) $1.4^{\circ} \mathrm{F}$, (d) $2.7^{\circ} \mathrm{F}$, (e.) $3.2^{\circ} \mathrm{F}$.

Which is an example of sympatric speciation? (a) A stream diversion divides a single turtle population into two isolated populations that evolve into two species. (b) Forest fragmentation isolates two species of mice. (c) Two bird species from separate forests evolve reproductive isolation. (d) Two fish species in a single lake evolve from a single ancestor that once lived in the lake. (e) Artificial selection by humans for certain breeds of dog.

In this century, the world population is likely to a.remain the same. b. continue to grow exponentially. c. decline rapidly because fertility rates are already below replacement level. d. stabilize after fertility rates fall below replacement level.

How does the age structure of a population help predict future population growth?

The demographic transition is a(n) a. untested hypothesis. b. natural law. c. model based on observed patterns. d. international law.

Which regions of the world are generally more developed? less developed?

Over long time periods, global climate change may change the _____ of a species. I. realized niche, II. fundamental niche, III. extinction rate. (a) I only, (b) II only, (c) I and lI, (d) I and III, (e) I, II, and III.

Which cannot reduce the effects of flooding?

Which countries have Type I survivorship? a. the most developed countries b. the least developed countries c. countries in the second stage of the demographic transition d. countries in the first stage of the demographic transition

For each pair of terms, explain how the meanings of the terms differ. infant mortality and life expectancy.

Which properties of a population change during the demographic transition?

If the annual rate of $\mathrm{CO}_{2}$ increase is 1.5 ppm and the concentration in 2010 is 390 ppm, what concentration would you expect in 2100? (a) 420 ppm, (b) 480 ppm, (c) 505 ppm, (d) 525 ppm, (e) 540 ppm.