evolution - mrvscienceandmath.com · the highest level of organization ... annual precipitation and...
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What is Biosphere? • The thin layer of air, land, and water on or near Earth’s
surface in which all living things on Earth exist.
What is Biosphere? • If an apple represented Earth, the biosphere would be the
thickness of the apple’s peel.
What kind of living and non
living things can you observe??
Every environment, such as a rainforest, contains living and non-living things (components)
LIVING components = BIOTIC components
NON - LIVING components = ABIOTIC components
Plants Animals Fungi Bacteria
Sunlight Soil
Moisture Temperature
What is Biosphere? • The thin layer of air, land, and water on or near Earth’s
surface in which all living things on Earth exist.
Levels of Organization • The biosphere is too large to study all the relationships
at one time.
• We use smaller pieces, or levels of organization, for their studies.
1. organism
2. population
3. biological community
4. ecosystem
5. biome
6. biosphere
Organisms, Populations, and Biological
Communities
Organisms An individual
living thing, such as one striped fish
Organisms, Populations, and Biological
Communities
Population A group of
organ isms of the same species that interbreed and live in the same place at the
same time, such as the school of striped fish,is a population.
Organisms, Populations, and Biological
Communities
Community All of the populations of
species (fishes, coral, and marine plants) that live in the same place at
the same time
Ecosystems, biomes, and the biosphere
Ecosystems A biological community, such as the coral reef, and all of the abiotic
factors, such as the sea water, that affect it.
Ecosystems, biomes, and the biosphere
Biome A biome is formed by a group of
ecosystems (the coral reefs off the coast of the Florida Keys) that share the same climate and have similar
types of communities.
Ecosystems, biomes, and the biosphere
Biosphere The highest level of organization
is the biosphere composed of many biomes
Biosphere is broken down to smaller divisions
BIOME
Includes large regions that have
similar biotic and abiotic components
(e.g. Rainforest Biome)
BIOMES of THE WORLD
• There are MANY BIOMES on EARTH (aquatic and terrestrial)
• We will learn only terrestrial biomes (9 of them)
BIOMES of THE WORLD
• Scientists classify them based on their temperature, amount of rain, type of plants or animals etc...
Survey of Biomes - TUNDRA
Location:
Animal Adaptations: Plant Adaptations::
Physical Features: Climate:
The tundra biome is in the upper northern hemisphere, just below the ice-covered polar
seas, at 60º to 70º north latitude.
Precipitation is less than 25 cm annually. Annual summer average temperatures range from 3ºC to 12ºC. Winter temperatures range
from 20ºC to 30ºC.
The tundra biome always has a layer of permanently frozen soil called permafrost. Its flat terrain (the physical features of its
land area) results in poor drainage. In summer, a thin layer of topsoil thaws,
creating many pools and marshes. The tundra is cold and dark much
of the year but has 24 hours of daylight each day during its brief summer.
No trees grow here since the growing season is too short. Roots cannot penetrate permafrost. Many plants grow
close to the ground, where they absorb the warmth that has been trapped by the dark soil and are sheltered from the fierce winds. Short grasses, lichens, and mosses survive here. Some
flowering plants, such as the arctic crocus, have fuzzy coverings on their stems, leaves, and buds that provide protection from
the wind. Shrubs flower quickly during the long, sunlit summer days. The Labrador tea bush keeps its old leaves rather than
dropping them, which conserves nutrients and helps protect the plant fromcold, wind, and drying out.
Arctic foxes and hares have compact bodies and shorter legs and ears, which reduce heat loss. Many tundra animals grow more slowly and
reproduce less frequently than animals in temperate biomes, therefore
requiring less energy.nThe Greenland sulfur butterfly has a long life cycle, taking up to
14 years to become an adult. Caribou migrate to food sources in winter. In winter, the white
feathers of the snowy owl prevent its prey from seeing it against the snow. Many birds
migrate here in summer to eat insects that reproduce in great numbers in the
marshy conditions.
Survey of Biomes - DESERT
Location:
Animal Adaptations: Plant Adaptations::
Physical Features: Climate:
Temperature and Precipitation
Factors that influence the characteristics and distribution
of biomes
Latitude
Elevation
Ocean Currents
Temperature and Precipitation
• temperature and precipitation (which includes rainfall, snow, mist, and fog) are two of the most important abiotic components that influence the characteristics of biomes and the distribution of biomes on Earth.
Scientists build graphs to see relations of world BIOMES to ANNUAL PRECIPITATION and ANNUAL average
TEMPERATURE
What type of biome has an annual average temperature of 20˚C receives 100 cm
of precipitation annually?
1. Boreal Forest Biome
2. Temperate Deciduous
Forest Biome
3. Tundra Biome
4. Temperate Rainforest
Biome
Latitude
• influence the characteristics and distribution of biomes because it affects temperature and precipitation.
Climate
• the average pattern of weather conditions that occur in a region, which are observed and recorded over a
period of years
Climatographs
• It includes average monthly temperature and an average of the total monthly precipitation for each month.
Climatographs
• You can use climatographs to: • Compare temperature and precipitation patterns in regions within a biome.
• Compare temperature and precipitation patterns in regions that are in different biomes
Climatographs
• The month of the year is shown on the horizontal axis. • Average temperature is shown on the right vertical axis,
and average precipitation is shown on the left vertical axis.
Climatographs
• The month of the year is shown on the horizontal axis. • Average temperature is shown on the right vertical axis,
and average precipitation is shown on the left vertical axis.
Part 3
9.
a) Climatograph B appears to have an even
distribution of precipitation throughout the
year, whereas Climatograph A shows more
precipitation in September through December.
b) Temperatures are colder in the winter months
and warmer in the summer months than in
Climatograph B.
c) Temperate rainforest
d) Temperate deciduous rainforest
Analyze Answers
1. The climate of Climatograph A is very wet with relatively warm
winters.
2. The climate of Climatograph B shows distinct seasons with cold
winters and warm summers.
3. Climatograph A is the temperate rainforest biome because of
the plentiful rainfall and mild temperatures year-round.
4. Climatograph B with its four distinct seasons and equal
distribution of rainfall is a temperate deciduous forest.
5. The growing seasons are almost equal if you count the number
of points above 5°C. Climatograph A has 7–8 (if you count the
one that appears on the line for 5°C). Climatograph B has 7
points above the line for 5°C.
Conclude and Apply Answers
1. Climatograph A represents Prince George,
British Columbia. Climatograph B represents
Ottawa, Ontario.
2. The growing season may be extended by
several months in
Adaptations and Biomes
• Different plants and animals are characteristic for different biomes – such as a cactus in the desert or a caribou on the tundra.
Adaptations and Biomes
• The reason for this is that they are better adapted for survival in the environmental conditions in the specific biomes
Adaptations and Biomes
AN ADAPTATION = characteristic that allows an organism to better survive
and reproduce.
1. Structural adaptation – a physical feature that helps an organism survive – A wolf has large paws to help it run in snow
– Porcupines have sharp, stiff quills for defense and protection
Adaptations and Biomes
AN ADAPTATION = characteristic that allows an organism to better survive
and reproduce.
2. Physiological adaptation – a physical or chemical event inside the body of an organism that allows it to survive
– A wolf can maintain a constant body temperature regardless of weather conditions
– A cactus needs only half as much water for photosynthesis as trees or ferns do
Adaptations and Biomes
AN ADAPTATION = characteristic that allows an organism to better survive
and reproduce.
3. Behavioural adaptation – a behaviour that helps an organism to survive – Wolves hunt in packs to capture large prey.
– A burrowing owl hisses like a rattlesnake to scare off predators
Blizzard
1. Which biome is Blizzard from?
2. What are some STRUCTURAL ADAPTATIONS which help Blizzard survive
in the wild?
3. What are some PHYSIOLOGICAL ADAPTATIONS which help Blizzard
survive in the wild?
4. What are some BEHAVIOURAL ADAPTATIONS which help Blizzard survive
in the wild?
Survey of Biomes - TUNDRA
Location:
Animal Adaptations: Plant Adaptations::
Physical Features: Climate:
Survey of Biomes – BOREAL FOREST
Location:
Animal Adaptations: Plant Adaptations::
Physical Features: Climate:
Survey of Biomes – TEMPERATE
DECIDUOUS FOREST
Location:
Animal Adaptations: Plant Adaptations::
Physical Features: Climate:
Survey of Biomes – TEMPERATE
RAINFOREST
Location:
Animal Adaptations: Plant Adaptations::
Physical Features: Climate:
Survey of Biomes - GRASSLAND
Location:
Animal Adaptations: Plant Adaptations::
Physical Features: Climate:
Survey of Biomes – DESERT
Location:
Animal Adaptations: Plant Adaptations::
Physical Features: Climate: