Exam 2 Environmental Geo 103
Why are estuaries some of the most fertile ecosystems in the world?
1) because at the end of the river minerals and nutrients are transferred from land to estuary 2) found in shallow waters 3)tidle action helps mixing those nutrients 4) photosynthesis carpet
When was the last California Grizzly Bear killed?
1924
Our chaparral vegetation is home to about ____ percent of all the worlds plant species
20%
Which of the following best illustrates the process of evolution
A population of mosquitoes develops resistance to a pesticide
The theory of evolution by natural selection was proposed in The Origin of Species by Means of Natural Selection (1859) written by:
Charles Darwin
Which biome consists of drought resistant plants?
Desert
True/False In Asia, areas with the Midlatitude Grassland biome type are commonly called Prairies
False
True/False The Boreal Biome has the most faunal species diversity of all the biomes
False
True/False The tropical rainforest and tropical deciduous forest are basically the same thing
False
Tallgrass prairies do not occur in which of the following states?
Florida
Why is the chaparral so unique in California and where else do we find chaparral like vegetation?
Harbors 20% of plant species and have distinctive of dry winters found southern, like Australia, South Africa, Mediterranean and chile
The shallow-water area along the shore of a lake or pond is called the _____ zone?
Littoral
Which biome do we live in here in Southern California?
Mediterranean Woodland Shrub
The relationship exemplified by bees consuming nectar and carrying pollen from on flower to another is known as
Mutualism
Give an example of a behavioral adaption found in animals
Orcas have learned to flip great white sharks over since they know that makes them fall asleep
In the grassland biome, known as prairie in North America, what was the name of a keystone species found there?
Prairie Dogs
the boreal forest is located ________ of tundra?
South
What is another name for the Boreal Forest?
Taiga
Which of the following biomes has the highest biodiversity ?
Tropical rainforest
Which biome is dominated by tall grasses?
Tropical savanna
True/False Adaptions are processes by which evolution occurs
True
True/False Biological communities can interact with each other, influence, and be found within one another
True
True/False Desert vegetation is surprisingly variable
True
True/False Polar bears attacking humans is an example of an environmental adaption
True
True/False Taiga is the Russian word for the fringe of the boreal forest in that country
True
True/False The tropical deciduous forest has a complex environmental relationship
True
Which biome is the most expansive of all biomes?
Tundra
The mechanism if natural selection involves all of the following except
a stable community structure
Endocrine disrupters:
affect the reproduction of fishes, birds, reptiles and mammals.
An ecological description of a species typically includes
all of these choices are correct
Coral reefs
all of these choices are correct
The number of species in a community can depend on
all of these choices are correct
The reason(s) that tropical regions of the world have such high biodiversity is
all of these choices are correct
Which of the following characterizes a symbiotic relationship?
all of these choices are correct
Wildfires
all of these choices are correct
Wildfires:
all of these choices are correct
A coastal body of water partly surrounded by land with input from both sea and fresh water is called
an estuary
Keystone species
are usually not the most abundant species in the ecosystem
A relatively distinct terrestrial region characterized by similar temperature and precipitation regardless of where it occurs in the world is called an:
biome
What is the idea behind the revitalization of the LA river
bringing back biodiversity and slowly recreational
The maximum number of individuals of a given species that a particular environment can support for an indefinite period, assuming there are no changes in the environment is called its
carrying capacity
Small plants attaching to the bark larger trees benefit from the position on the tree, receiving necessary water and sunlight while giving the tree neither help nor harm. This is an example of
commensalism
Which of the following is an example of a density-dependant factor affecting the population growth
disease
Why are coral reefs in danger?
due to climate change, overfishing destroys these marine ecosystems and making it threaten , coral bleaching which causes water temperatures to change, water pollution and human acitivity and 90% of marine animals rely on coral
An organism's role, or lifestyle, within the structure of an ecosystem is its
ecological niche
The movement of individuals out of a population is
emigration
Pollutants that interfere with the normal functioning of hormones are called?
endocrine disrupters
Factors that limit growth and produce population equilibrium are known as
environmental resistance
Limits set by a surrounding environment on reproduction are called
environmental resistance
Populations that are growing at their intrinsic rate of increase:
exhibit exponential growth
Individuals within a population each have a unique combination of traits due to
genetic variation
Which of the following is keystone species in U.S temperate forests?
gray wolves
Chaparral biomes occur
in regions around the globe with mild, rainy winters, followed by hot, dry summers
How did the discovery of genetic mutation to the modern synthesis of evolution
it provides a mechanism by which genetic variation could be generated
In order for every parasite to successfully reproduce, it must
keeps its host alive
Which of the following is not a biome?
mangrove
What are the three kinds of symbiosis
mutualism, parasitism, and commensalism
All of the following are examples of a density-independent factor affecting
none of these choices is correct
The relationship between a tick and a dog is an example of
parasitism
In a parasitic relationship where the host contracts a disease and sometimes dies, the parasite is called a(n)
pathogen
Which of the following organizational hierarchies is correctly listed from smallest to larges unit?
population-->community-->ecosystem-->biome
The deepest zone in a large lake, below where the sunlight penetrates, is the?
profunda zone
Which of the following abiotic factors does not typically affect biome structure ?
salinity
The classic example of physiological adaption on a species is shown by the _____ on a fox.
size of ears
The biome most suitable for the development of farmland is:?
temperate grassland
Population density is
the total number of individuals of a given species per unit or area at a given time
What is the reason(s) polar bears are attacking humans?
there is a lack of food sources due to climate change
Why is LONE WOLF OR-7 so important ?
this lone Gray wolf left his pack and stepped foot in California and traveled 1200 miles to get there and brought his girlfriend over to repopulate since they were extinct in California for quite sometime
what makes mountain lion P-22 so special?
this mountain lion that ate the koala from l.azoo and had crossed ten freeways to get to griffith park and become famous for that and is also seen around
All of the following are examples of mutualism except
trees and epiphytes
Competition occurs when:
two or more species attempt to use an essential common resource.