Chapter 22 Test Monday
An underwater structure made from outside skeletons of tiny, soft-bodied animals is a(n) _____
Coral reef
slowly
Desert plants grow _____.
The process of one ecological community gradually changing into another is _______
Ecological succession
When seeds are carried to bare areas of land this can begin ______
Ecological succession
Regions along coastlines where streams flow into a body of saltwater are called ______
Estuaries
The process of a body of water becoming nutrient-rich is ________
Eutrophication
Climax communities are the same everywhere (True or False)
False
In open oceans photosynthesis can take place anywhere (True or False)
False
How do humans contribute to eutrophication?
Fertilizer, waste, or pollution
______ from farms, gardens, and roads wash pollutants into ponds, lakes, rivers, and streams
Runoff
The amount of salt dissolved in water is ____
Salinity
Which has a higher salinity? Freshwater or saltwater?
Saltwater
What type of succession is when a corn field gradually changes into a forest?
Secondary
When an existing ecosystem is destroyed by fire a(n) _______ can occur
Secondary succession
In aquatic succession the buildup of decomposed remains forms __________
Soil
What washes into a river to bring nutrients?
Soil
In lakes, _____ only penetrates the top few feet of water
Sunlight
climax community is a community that ___.
is a stable community that no longer goes through major ecological changes
tropical rain forest
which of the biomes has weather that is warm and wet year-round?
A mature tropical rain forest is an example of a(n) ______
Climax community
biome
A geographic area on earth that contains ecosystems with similar biotic and abiotic features is a _____.
The ecological succession takes place in a freshwater ecosystem, what is the result?
A land ecosystem
A stable community that no longer goes through major ecological changes is a(n) ________
Climax community
What is the final stage of ecological succession in a land ecosystem called?
Climax community
When the nutrient level of a pond increases, the levels of ________ increase using up most of the oxygen in the water
Algae
When freshwater ecosystems change over time it is called a(n) _______
Aquatic succession
Do wetlands contain saltwater, freshwater, or both?
Both
Destruction of estuaries exposes the coastline to _____
Flooding
Streams, rivers, and lakes are _____ ecosystems
Freshwater
Does slow-moving river water have higher or lower levels of nutrients?
Higher
Dams from ______ plants stop the water's flow
Hydroelectric
tundra
In which biome does does drilling for oil and gas interrupt migration patterns?
The ocean shore between the lowest low tide and the highest high tide is _____
Intertidal zone
Which has a higher oxygen level? Lakes or rivers?
Rivers
In aquatic succession eventually the water disappears and the area becomes _______
Land
to get lumber, farming, to build ranches
List reasons why people have cleared so much land in the tropical rain forests.
Do ponds and lakes form in high or low areas of land?
Low
Does slow-moving river water have higher or lower levels of dissolved oxygen?
Lower
more
People have cleared _____ than half of the Earth's tropical rain forest.
The first species that colonize new or undisturbed land are _______
Pioneer species
Sunlight reaches the bottom of most _____
Ponds
Ecological succession in a newly formed area is _____ succession
Primary
What type of succession occurs in a newly formed island formed by a lava flow?
Primary succession
grassland
The plains of North America are an example of which biome?
smallest
The tundra is one of the _____ biomes in the world.
Climax communities are usually stable for many years (True or False)
True
Some organisms that live on land depend on aquatic ecosystems for food and shelter (True or False)
True
Aquatic ecosystems that have a thin layer of water covering soil that is wet most of the time is a(n) ______
Wetland
grassland
What biome are the Savannas of North Africa are an example of?
temperate deciduous forest
What biome has animals spend the winter in hibernation?
Temperate deciduous forest
What biome has the most common forest ecosystems in the United States?
permafrost
What is a layer of permanently frozen soil that prevents deep root growth?
plowing the land for crops
What is the main way people have reduced habitats for wild species in the grassland biome?
deciduous
What trees lose their leaves in the fall?
tundra
Which biome has latitudes just south of the north pole?
temperate rain forest
Which biome has rich, moist soil?
desert
Which biome has the Earth's direst ecosystems?
tundra
Which biome in the far north is cold, dry and treeless?
tropical rain forest
Which biome is near the equator?
grassland
Which biome is perfect for growing crops and raising cattle and sheep?
taiga
Which biome is populated by moose, bears, lynx, shrews, and foxes?
taiga
Which biome's dominant plants are cone-bearing trees?
grassland
Which biome's dominant plants are grasses?
temperate rain forest
Which biome's dominant plants are spruce, firs, and cedars? (They have redwoods)
temperate deciduous forest
Which biome's dominant plants lose their leaves every autumn?
taiga
Which land biome cover the most area on earth?
