Show:
Vocabulary
Biomes
Freshwater Ecosystems
Saltwater
Ecosystems
How Ecosystems Change
100
Large geographic areas that have similar climates and ecosystems are called what?
Biomes
100
Warm temperatures, wet weather and lush plant growth are found in what biome?
Tropical Rain Forest
100
What are the three most important factors in aquatic environments?
water temperature, amount of sunlight, and amount of dissolved oxygen and salt in the water
100
What percent of water on the surface of Earth contains high concentration of salts?
95 percent
100
The first living things to inhabit an area are called what?
Pioneer Species
200
Define succession
Succession refers to the normal, gradual changes that occur in types of species that live in an area.
200
Which biome is perfect for growing crops such as wheat and corn?
Grassland
200
Give three examples of freshwater ecosystems
Rivers, streams, lakes, ponds, and wetlands
200
Organisms that live on seashores have what kind of adaptations?
adaptations that enable them to survive dramatic changes in temperature, moisture, and salinity
200
When plants die what do they add to the soil?
Nutrients
300
Name for regions that are wet for all or most of the year
Wetlands
300
Which two biomes are the driest?
Desert and Tundra
300
True or False: Fast flowing streams usually have clearer water and higher oxygen content than slow flowing streams.
True
300
How do scientists divide the ocean into different life zones?
Zones are based on the depth to which sunlight penetrates the water
300
What is the process of succession that begins in a place previously without plants?
Primary Succession
400
Portion of the shoreline that is covered with water at high tide and exposed to the air during low tide
Intertidal Zone
400
The two most important climatic factors that affect life in an area are ___________ and __________ .
Temperature and Precipitation
400
True or False: Lakes and ponds contain less plants than flowing water environments contain.
False, lakes and ponds contain more plants than flowing water environments.
400
What type of organisms are found in estuaries?
Algae, shrimp, crabs, clams, oysters, snails, worms, and fish
400
True or False: Climax communities have reached an end stage of succession and are stable
True
500
Define estuary
The area where a river meets an ocean and contains a mixture of freshwater and salt water
500
What two types of biomes can be found in temperate regions?
Deciduous forest biome and rain forest biome
500
Name one way human activities can harm freshwater environments.
Fertilizer filled run off and sewage dumped in water
500
What are coral reefs made from?
Calcium carbonate skeletons secreted by animals called corals
500
Which type of succession is usually a shorter process?
Secondary Succession