Affiliate Marketing Secrets

1) A condition in the environment that can restrict a population’s growth is a
A) Niche
B) Limiting factor
C) growth factor
2) Which of the following is a measurement of population density?
A) The number of frogs in a pond
B) The number of deaths per year
C) the number of bacteria per square millimeter
3) Which would be least likely to be affected by a density-dependent factor?
A) A small, scattered population
B) A large, dense population
C) A population with a low death rate
Complete each sentence or statement:
The ___method of estimating population size involves measuring every member of a species within a small area.
Space, food, and ___ are density-dependent factors.

(1) deserts are defined as areas with which of the following characteristics?
-arid conditions
-high temperature
-lack of vegetation
-all of the above
(2) The ___ is the population size that can be maintained given a certain number of limiting factors?
-carrying capacity
-limit level
-niche
-population density
(3) which of the following describes organisms in a pelagic zone?
-plankton floating near the ocean surface
-botton-dwellers on the ocean floor
-barnacles glued to stone in an intertidal zone
-frogs in a pond close to the ponds edge
(4) which of the following is not an example of secondary sucession?
-farmland is abandoned
-a forest is clear cut
-a lava flow covers the landscape
-a wildfire burns away the vegetation on a hillside
(5) in a lake, the epilimnion is the?
-environment found close to shore in a lake
-environment found at the lake bed
-lower, colder layer
-upper surface layer
(6) groundwater located in permeable layers of rock is a/an?
-reservoir
-aquifer
-artesian
-aquiclude
(7) greenhouse gases include which of these?
-carbon dioxide
-nitrous oxide
-methane
-all of these
(8) if nothing is done to control the level of greenhouse gases in the atmosphere, global temperature is expected to?
-rise
-droop
-even off
-fluctuate randonly
(9) oxygen and nitrogen gases comprise ___% of the atmosphere by volume
-21
-50
-78
-99
(10) ___ is a scientific discipline that devolops practical approaches to preven extinction of species and destruction of ecosystems?
-ecology
-environmentalism
-conservation biology
-biogeography
(11) increases in greenhouse gases cause increases in global temperature because these gases are able to trap heat rerafiated from earth’s surface?
-true
-false