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unit exam
chapters 4,5,6
34
Biology
9th Grade
12/10/2008

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Term
THe average year after year conditions of temperature and precipitation in a particuler region are refferres as the regions....
Definition
d. climate
Term
all of the following factors contribute to earth's climate except....
Definition
a.latitude
b.longitude
c. transport of heat
d. shape and elevation of landmasses

D.
Term
the loss of heat to space is slowed by
Definition
b. atmospheric gases
Term
THe greenhouse effect is
Definition
a. the result of an excess of carbon dioxide in the atmosphere
Term
The unequal heating of the earth's surface
Definition
a. drives wind an docean currents
b. causes winds that transport heat through the biosphere
c. has important eefects on earths climate regions
d. all of the above


d.
Term
A mountain can effect climate by
Definition
b. causing precipitation to fall mostly on one side of the mountain
Term
each of the following is an abiotic facter in the enviroment except...
Definition
a. average temp
b. types of soil
c. number and kinds of predators
d. concentration of oxygen


c.
Term
WHich is a biotic factor that affect the size of a population in a specific ecosystem
Definition
c. number and kninds of predators in an ecosystem
Term
an organisms niche is
Definition
all the physical and biological factors in the organisms enviroment
Term
several species of warbkers can kive int he samr spruce tree only because they....
Definition
occupy diff. niches within that tree
Term
diff. species can share the sAME HABITATE but competition among them is reduced if they
Definition
d. occupy diff. niches
Term
no two species can occupy hte same habiat in the same niche at the same time
Definition
c.because of the competitive exclusion principle
Term
the symbiotic relationship between a flower and an insect that feeds on its nectar is an ex. of
Definition
a. mutualism because the flower provides the insect with food, and the insect pollinates the flower
Term
a predator can increase the number of certain species in its habitat y
Definition
a. killing and eating the competitors of other species
Term
what is one difference between primary and secondary succession
Definition
b. secondary begins on soil, and primary begins on newly exposed surfaces
Term
which factor can influence continual change in one ecosystem
Definition
a. further disturbences
b. long-term climate change\c. standing water ecosysstems
d. all the above

d.
Term
ponds and lakes are....
Definition
c. standing water ecosystems
Term
which is one way a wetland ecosystem differs from a standing water ecosystem
Definition
c. water does not always cover a wetland like it does a standing water ecosystem
Term
which of the following is NOT one of the factors that play a role in population growth rate
Definition
d. demography
Term
one of the main characteristics of a population is
Definition
b. geographic distrobution
Term
there are 150 saguaro cactus palnts per square kilometer in a certain area of Arizona desert. TO which population characteristic does this oinfo. refer
Definition
d. pop. density
Term
what does the range of a population tell you that the density dies not?
Definition
b. the areas inhabited by a population
Term
a small farmin g community in texas covers 14 sq. km there are 420 individuals who live within the town limits what is the population density of the community
Definition
c 30 individuals per square km
Term
which of the following tells you populaiton density
Definition
d. the number of bacteria per square millimeter
Term
the movement of organisms into a given area from another area is called.....
Definition
a. immigration
Term
what must occur in a population for it to grow
Definition
a.the birthrate becomes higher than the death rate
Term
what is happening in a population as it decreases
Definition
d. the death rate becomes higher than the birthrate
Term
if immigration and emigration # remain =, which is the most important contributing factor to a slowed growth rate?
Definition
c. decreased birthrate
Term
which are two ways a population can decrease in size
Definition
c. decreased birthrate and emigration
Term
which factor might not conribute to an exponential growth rate in a given popultation
Definition
d. reduced resources
Term
in a logistic growth curve exponential growth is the phase in which the population....
Definition
b. grows quickly
Term
when the exponential phase of a logistic growth curve of a population ceases,
Definition
c. population growth begins to slow down
Term
all of the following are limiting factors EXCEPT
Definition
a.immigration
b.competition
c.predation
d.human disturbances

a
Term
which of th
Definition
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