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HUMANITY & THE WORLD BIOMES Unit 2-1a Understanding Terrestrial Biomes.

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Presentation on theme: "HUMANITY & THE WORLD BIOMES Unit 2-1a Understanding Terrestrial Biomes."— Presentation transcript:

1 HUMANITY & THE WORLD BIOMES Unit 2-1a Understanding Terrestrial Biomes

2 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… DesertTemperate Forest

3 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

4 Where Are Biomes Found? Latitude – Measures the distance north or south of the equator in degrees 0 o to 30 o Latitude - Tropical Region 30 o to 60 o Latitude - Temperate Region Above 60 o Latitude - Polar Region At what latitude would you expect to find a… Savanna GrasslandTaiga

5 Is There Snow At The Equator? Altitude – Measures the height above sea level At the base of a mountain, such as Mt. Kilimanjaro, there may 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 of Mount Kilimanjaro resemble?

6 Altitude & Latitude Where is the equator located in this graph? Where are the evergreen trees located in this graph? 29,000 ft 0 ft 0o0o 90 o

7 Identifying Biomes Complete this chart using the terms High, Average, Low and Seasonal. TemperaturePrecipitationBiodiversity Tropical Rain ForestHigh Temperate ForestSeasonalHigh TaigaLowAverage SavannaHighAverage GrasslandSeasonalAverage DesertHighLow TundraLow

8 Biome Pyramid Which layer(s) of the pyramid illustrate 0 o, 30 o, and 60 o Latitude? In which corner of the pyramid would you find the highest amount of biodiversity?

9 Biomes Of The World Color Key Light Purple Yellow Light Green Brown Light Blue Dark Green Dark Blue Biome Temp. Forest Desert Rain Forest Grass/ Savanna TundraTaigaMountain

10 Close Your Notebooks… What have you learned in this unit? 1.How are biomes characterized? 2.What is the difference between weather and climate? 3.What is biodiversity and what factors can increase it? 4.How do latitude and altitude affect biomes? 5.Name the seven primary biomes and a place they can be found.

11 HUMANITY & THE WORLD BIOMES Unit 2-1b Understanding The Human Body

12 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?

13 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 is the cell’s control center? The Nucleus There are over 100 trillion cells in the human body and each has a special job!

14 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 including many embryonic stem cells. Stem cells are pluripotent meaning they can form cells with many different purposes. These pluripotent cells form specialized cells that help create entire organ systems.

15 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 of afflictions could be treated with this technology? Currently stem cells are tightly regulated & controversial. Why do you think people are hesitant to use embryonic stem cells without restrictions?

16 How Cells Become Tissue Tissue – A group of similar cells that perform a common function. There are four types… Epithelial – Lines & protects body surfaces Ex: Skin and stomach lining Nervous – Carries information Ex: The brain & spinal cord Connective – Supports, protects and insulates the body Ex: Blood, fat, cartilage & bone Muscle – Enable movement Ex: Skeletal, smooth & cardiac How many different types of tissue are found in your stomach?

17 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 shown in this diagram? How many organs can you identify in this image? The excretory system includes the kidneys and the bladder.

18 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.

19 Close Your Notebooks… What have you learned in this unit? 1.How do stem cells change into specialized cells? 2.Why are people so excited about stem cell research? 3.Why are people so cautious when it comes to stem cell research? 4.What is the purpose for each of the four types of tissue? 5.How many organ systems can you name?

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