environmental science final

an estuary functions as a mineral trap due to

The mixing action of river water and ocean water

biomes

are usually described by their vegetation

which of the following reproductive situations will limit a populations biotic potential

the maximum number of offspring each individual can produce

coral reefs are intricately shaped rocklike structures that are formed as a result of

the secretion of calcium carbonate by tiny marine animals

which of the following is not true about the temperate dedicious forest

the soil is rich, and plants cover much of the forest floor.

which of the following statements explains why the growth of orchids on the high branches of tropical trees is an example of commensalism

the trees are neither benefited or harmed

why doesnt photosynthesis occur in deep ocean water

there is no sunlight

chaparral plants usually survive fires because

water is stored in their small, leathery leaves

which of the following is not characteristics of wetlands

wetlands are limited to inland freshwater environments

A species of plant has exponential growth after it is introduced into an area where it has never lived. Which statement best describes exponential growth?

within a few years the population increases dramatically.

which of the following is not a threat to coral reef

zooplankton

the distance north or south of the equator, as measured in degrees, is called

latitude

which of the following would most likely cause a large number of density-independent deaths in a population ?

limited resources

in the zone, life is diverse and abundant

littoral

which of the following has the greatest effect on reproductive potential

producing earlier in life

estuaries are very productive ecosystems because they receive fresh nutrients from

rivers and oceans

which of the following statements is correct ?

An organism's habitat is a location.

the density of a population is

Number of individuals per unit area

each of the following is an example of a parasite except

a cow in a pasture

taiga is

a forest biome dominated by coniferous trees, such as pine, fir, and spruce.

an example of population is

all maple trees in a forest

the types of organisms found in a pond or lake depend on

all of the above

two threats to ocean ecosystems are

all of the above

which of the following is a threat to coral reefs

all of the above

which of the following will limit a populations growth

all of the above

estuaries

are ecosystems where both fresh water and salt water are present

Grasslands, such as the prairies of North America,

are threatened by soil erosion because native grasses have been damaged or destroyed by plowing and overgrazing

in the zone, the water is cool and dark

benthic

worms, mussels, and barnacles are examples of

benthos

competition for food cannot occur

between animals from two different ecosystems

which of the following is located primarily in coastal areas that have mediterranean-style climates with warm, dry summers and mild, wet winters?

chaparral

Species A benefits and species B is unaffected

commensalism

in which of the following relationships is neither species harmed

commensalism

the interaction between two species in which both are harmed is

competition

if exponential growth occurs in the population of a species predator, the population of its prey will most likely

decrease quickly

tropical rainforests are threatened by

deforestation and the trade of rain forest plants and animals

Professionals who study and make predictions about human populations are called

demographers

The number of wild horses per square kilometer in a prairie is the horse populations

density

which of the following would you expect to see in the emergent layer of a tropical rainforest

eagles, bats, and snakes

the two types of acquatic ecosystem are

freshwater and marine

the tundra

has a layer of soil that is permanently frozen beneath the top soil.

where is most of the life found in a pond or lake

in the littoral zone

which of the following is not an environmental function of wetlands

increasing runoff

what causes most coastal pollution in the united states

industrial waste and sewage

If you visited a savanna, you would likely see

large herds of grazing animals, such as rhinos, gazelles, and giraffes.

an estuary can support abundant life for all of the following except that an estuary

maintains a constant salinity level

A true statement about parasitism is that parasites

may cause their hosts to become more vulnerable to predators

Which factor contributed most to the exponential growth of the human population?

more food, better hygeine

the relationship between acacia trees and ants that live on them is an example of

mutualism

in a situation where the average number of deaths is greater than the average number of births in a population is an example of

negative growth rate

turtles, fish, and whales are examples of

nekton

which of the following is one of the main properties used to describe a population

number of individuals

Deserts are

often formed on the dry side of mountain ranges

a grizzly bear can be all of the following except a

parasite

which of the following is not one of the three main groups of acquatic life

pelagos

the relationship between a canadian lynx and a snowshoe hare is an example of

predator and prey

adaptations of desert animals that help them survive in the hot, dry desert often include

searching for food at night

the majority of marine organisms are found in

shallow, coastal waters

Biomes with higher temperatures and less precipitation tend to have

shorter and denser vegetation

the carrying capacity of an environment for a particular species at a particular time is determined by the

supply of the most limited resources

which of the following statements is not correct ?

symbiosis is a relationship in which two organisms live apart

the main factors that determines what type of plants grow in a biome is

temperature and precipitation

as you travel from the north pole toward the equator, you would expect to see

tundra, then grasslands, then tropical rainforests

the difference between a predator and a parasite is that a predator

usually kills and eats its prey