humanity & the world biomes unit 2-1a understanding terrestrial biomes

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?