SCIENCE EXPERT GROUPS PROJECT

WHY IS NITROGEN IMPORTANT?

• Nitrogen makes up 78% of the air we breathe
• It also makes up proteins and DNA
• It is used by plants to make chlorophyll
• Without it plants wouldn't be able to grow or produce oxygen
• We need Nitrogen to breathe, get energy, grow, and many other things

HOW IS DECOMPOSITION RELATED TO THE NITROGEN CYCLE

• Decomposition is a VERY important part of the Nitrogen Cycle.
• After animals eat plants with nitrogen inside them, the nitrogen needs to return to the soil
• The animal returns this nitrogen to soil in the form of waste, or when the animal dies.
• Decomposers like fungi, then decompose the decaying animal or waste.
• This returns nutrients like nitrogen to the soil so it can now return to the atmosphere

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FUNGI ARE A TYPE OF DECOMPOSER

DECOMPOSING LOG

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TREE BARK ROTTING OFF A TREE

THE DIFFERENCE BETWEEN

PRIMARY SUCCESSION

• Primary Succession occurs when an event gets rid of all items from an area
• This includes soil, shrubs, and trees
• These areas are usually rocky and barren
• The pioneer species in this area are rocks
• Lichen and Moss can then weather down these rocks and create soil

SECONDARY SUCCESSION

• Secondary Succession occurs when most living things in an area are destroyed but the soil still remains
• This way grass and small trees automatically start growing and mature trees come soon after
• The first thing to be in an area with secondary succession is grass or annual plants

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PIONEER SPECIES

• A pioneer species is one that can live in an area with primary succession
• In these areas there is usually no topsoil so plants can't grow here at first
• The main pioneer species in these areas are lichens and moss
• Lichens and Moss can break down rock into soil
• With soil, an area can continue the process of succession

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CLIMAX COMMUNIUY

• This occurs when an area reaches a point where major changes stop
• This causes all the plants in the areas growing to pause

CLIMAX COMMUNITY PICTURES

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OTHER PICTURES:

CLIMAX COMMUNITY

SECONDARY SUCCESSION

CLIMAX COMMUNITY

PIONEER SPECIES IN PRIMARY SUCCESSION

PRIMARY SUCCESSION

DIFFERENCE BETWEEN

WEATHERING

• Weathering is the breaking down of rocks
• Usually by water, wind, or humans

EROSION

• Erosion is the carrying away of rocks, sediment, or soil
• Usually by water, wind, or animal activity

DIFFERENT TYPES OF

WIND EROSION

WATER EROSION

GLACIER EROSION

SOIL EROSION

DIFFERENT TYPES

PHYSICAL WEATHERING

• Physical weathering is the breaking down of the Earth's surface
• Through the process of natural or physical means

CHEMICAL WEATHERING

• The breaking down of rocks, soils, and minerals
• Through the processes of oxidation and hydrolysis
• Oxidation- the process of combining any substance with oxygen
• Hydrolysis- decomposition of a compound by a reaction with water

BIOLOGICAL WEATHERING

• The breaking down of rock by plants and animals
• Usually through the growth of roots or burrowing of animals

MORE PICTURES:

CHEMICAL WEATHERING

WATER EROSION

BIOLOGICAL WEATHERING

CHEMICAL WEATHERING

TROPISM

THIGMOTROPISM

PHOTOTROPISM

HYDROTROPISM

GEOTROPISM

MORE PICTURES:

THIGMOTROPISM

PHOTOTROPISM

ANIMAL ADAPTATIONS

PHYSICAL ADAPTATIONS

BEHAVIORAL ADAPTATIONS

PHYSICAL ADAPTATIONS

LONG BEAK

WEBBED FEET

CLAWED FEET

LONG NECK

BEHAVIORAL ADAPTATIONS

MIGRATING SOUTH

HIBERNATING

SLEEPING WITH ONE EYE OPEN

STORING NUTS

PHOTOSYNTHESIS AND

PHOTOSYNTHESIS

• 6 CO2 + 12 H2O + Sunlight=6 O2+C6H12O6+6 H2O
• Carbon Dioxide + Water + Sunlight=Oxygen+Carbs+Water
• The process where plants convert light to chemical energy
• This chemical energy is stored in the bonds of a plants sugar
• This is the process where plants make food and produce oxygen

RESPIRATION

• Formula: C6H12O6+6 O2 👉 CO2+6 H2O
• Glucose + Oxygen 👉 Carbon Dioxide + Water
• The process where food is broken down by the body and creates ATP
• This energy fuels all the activities you do
• A waste product of respiration is Carbon Dioxide

PLANT ADAPTATIONS

DIFFERENCE BETWEEN

EVERGREEN

PINE TREE

CEDAR TREES

FIR TREES

DECIDUOUS

OAK TREE

MAPLE TREE

CHERRY TREE

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