What is ecology?
The study of the relationships among organisms and the environment
Ecologists study ecology in a hierarchy. What are the components of the hierarchy?
What is organism ecology?
Study of the organism's behavior, structure, and physiology.
What is population?
A population consists of interbreeding organisms of one species occupying the same area at the same time
What is community?
A community includes all populations, representing multiple species in the same region.
What is ecosystem?
An ecosystem is the biotic (living) community plus the abiotic (no living) environment.
What is the biosphere?
The biosphere is all parts of the planet where life exists
Who said "Climate is what we expect; weather is what we get"?
What do weather and climate involve?
The physical properties of the troposphere
- temperature, pressure, humidity, cloudiness and wind.
What is weather?
Specific atmospheric conditions over short time periods within small geographic areas
What is climate?
Patterns of atmospheric conditions across large geographic regions over long period of time
Why are the temperatures coldest at the poles of the earth?
The earth's surface is curved, meaning that the sun's rays are spread over a greater surface area with increasing distance from the equator.
What accounts for the different seasons of earth?
The tilt of the earth's axis (two hemispheres)
All regions of the earth are experiencing 12 hours of daylight and 12 hours of darkness. What part of the earth is facing the sun?
The equator (Neither poles are facing the earth)
The Northern Hemisphere has the shortest day and longest night; the Southern Hemisphere has the longest day and shortest night. Which Hemisphere is tilting towards the sun?
The Southern Hemisphere
The Northern Hemisphere has the longest day and shortest night; the Southern Hemisphere has the shortest day and longest night. Which Hemisphere is tilting towards the sun?
The Northern Hemisphere
Which months of the year does the equator face the sun?
March and September
Which month of the year does the Northern Hemisphere face the sun?
Which month of the year does the Southern Hemisphere face the sun?
Why are some areas of the Earth moist and others are dry?
Why is the air around the equator typically warm and moist?
The equator receives the most heat from the sun and evaporates the water, forming clouds rang release abundant rain.
What latitude does dry air descend around?
(Absorbs moisture from the land)
What are the air conditions like at 60° latitude?
The air mass has warmed and absorbed enough moisture from the land to rise and cause precipitation (England)
Where does cold, dry air descend?
At the poles
________ also influence climate. Most precipitation falls on the _______ side.
What are biomes?
Ecosystems with distinctive communities of life
What are the two main factors that determine the dominant plants in each biome?
Temperature and moisture
List the 8 different biomes.
1. Tropical forest
5. Temperate grassland
6. Temperate forest
7. Northern coniferous forest
Describe the life in tropical rainforests.
- high temperature all year around
- trees that grow above a cloud canopy
- shrubs and herbs, broadleaf evergreens
- succulent plants
- mammals, amphibians, reptiles, birds, arthropods
Describe the life in a Savanna.
- warm all year around
- scattered trees, a lot of grass
- fires common
- grass grows rapidly in rain
- large plant eating mammals