humanity & the world biomes unit 2-1a understanding terrestrial biomes
TRANSCRIPT
HUMANITY & THE WORLD BIOMESHUMANITY & THE WORLD BIOMES
Unit 2-1aUnit 2-1a
Understanding Understanding Terrestrial BiomesTerrestrial Biomes
What Is A Biome?
Biome – A large region characterized by a specific type of climate as well as certain plant & animal communities
Climate - The weather conditions of an area over a long period of time including temperature, precipitation, and humidity.
Describe the climate for a…Desert Temperate Forest
Why Are There Different Biomes?
Limiting Factor – An environmental factor that limits the growth, reproduction or distribution of a species
The limiting factors in a biome are generally related to the temperature and available water.
Biodiversity - Measures the variation within a species, or of different species within a community
Compare the biodiversity and population density of a…
Tundra Tropical Rain Forest
Where Are Biomes Found?
Latitude – Measures the distance north or south of the equator in degrees
0o to 30o Latitude - Tropical Region
30o to 60o Latitude - Temperate Region
Above 60o Latitude - Polar Region
At what latitude would you expect to find a…
Savanna Grassland Taiga
Is There Snow At The Equator?
Altitude – Measures the height above sea level
At the base ofa mountain, such asMt. Kilimanjaro, theremay be thick vegetation& high levels of biodiversity.
Continuing up the mountain, the decrease in temperature and available water creates ecosystems that resemble different biomes.
What type of biome would the top ofMount Kilimanjaro resemble?
Altitude & Latitude
Where is the equator located in this graph?
Where are the evergreen trees located in this graph?
29,000 ft
0 ft
0o 90o
Identifying BiomesComplete this chart using the termsHigh, Average, Low and Seasonal.
Temperature Precipitation Biodiversity
Tropical Rain Forest High High High
Temperate Forest Seasonal High High
Taiga Low Average Average
Savanna High Average Average
Grassland Seasonal Average Average
Desert High Low Low
Tundra Low Low Low
Biome Pyramid
Which layer(s) of the pyramid illustrate 0o, 30o, and 60o Latitude?
In which corner of the pyramid would youfind the highest amount of biodiversity?
Biomes Of The World
Color Key
Light Purple
YellowLight Green
BrownLight Blue
Dark Green
Dark Blue
BiomeTemp. Forest
DesertRain
ForestGrass/
SavannaTundra Taiga Mountain
Close Your Notebooks… What have you learned in this unit?
1.How are biomes characterized?
2.What is the difference betweenweather and climate?
3.What is biodiversity and whatfactors can increase it?
4.How do latitude and altitudeaffect biomes?
5.Name the seven primary biomesand a place they can be found.
HUMANITY & THE WORLD BIOMESHUMANITY & THE WORLD BIOMES
Unit 2-1bUnit 2-1b
UnderstandingUnderstandingThe Human BodyThe Human Body
The Human Population
Homo Sapiens live on every continent of the Earth!
What other species has such a wide distribution?
What adaptations have humans developed to survive
under such extreme environmental forces?
The Human Body
Cells – The smallest living unit that can perform all life processes. Inside the cell are many organelles that perform specialized functions, such as providing energy.
Which organelle contains genetic material and isthe cell’s control center?
The Nucleus
There are over 100 trillion cells in the human body and each has a special job!
Where Do All These Cells Come From?
Life begins as a single cell formed by an egg and sperm.
Five days after conception,a single cell divides into a few hundred cells includingmany embryonic stem cells.
Stem cells are pluripotentmeaning they can formcells with many differentpurposes.
These pluripotent cells form specialized cellsthat help create entire organ systems.
What Can You Do With a Stem Cell?
Without a stimulus, stem cells will divide indefinitely.
With the proper stimulus to activate the DNA,these cells can form any of the 100,000,000,000,000 cells in your body?
What types ofafflictions could be
treated withthis technology?
Currently stem cells are tightly regulated & controversial.
Why do you think people are hesitant touse embryonic stem cells without restrictions?
How Cells Become TissueTissue – A group of similar cells that perform a common function. There are four types…
Epithelial – Lines & protects body surfacesEx: Skin and stomach lining
Nervous – Carries informationEx: The brain & spinal cord
Connective – Supports, protectsand insulates the bodyEx: Blood, fat, cartilage & bone
Muscle – Enable movementEx: Skeletal, smooth & cardiac
How many different types of tissueare found in your stomach?
What Makes An Organism?
Organs – Two or more tissue types performing a specific function. These organs make up organ systems.
There are 11 different organ systems:Circulatory, Digestive, Endocrine, Excretory, Immune, Integumentary, Muscular, Nervous,
Reproductive, Respiratory & Skeletal
Which organ system is shownin this diagram?
How many organs can youidentify in this image?
The excretory system includesthe kidneys and the bladder.
What Makes A Human Being?
And so even with all of our external differences,we are still all part of the same species.
Homo Sapiens make up all members of the Human Race.
Close Your Notebooks… What have you learned in this unit?
1.How do stem cells change intospecialized cells?
2.Why are people so excitedabout stem cell research?
3.Why are people so cautious whenit comes to stem cell research?
4.What is the purpose for eachof the four types of tissue?
5.How many organ systems canyou name?