The living part of the worldSimilar words are

environments, ecosystems, biomesExamples of things in the biosphere

Animals, plants, bacteria, insects, and virusesHow does the biosphere affect humans?

It’s the food we eat, the plants that we grow, provides oxygen for us to breathe, pets for comfort

Biosphere

What is an environment?It is a combination of the living and nonliving

factors that interact with each otherEverything in the world falls into either a living

or nonliving thingThe environment is also known as an

EcosystemThe study of relationships of abiotic and biotic

factors

Ecosystems

EcosystemsAbiotic Factors Non

living parts of an ecosystemThese materials will

provide the nutrients and materials needed to support the living part of an ecosystem

Examples of Abiotic Factors:

Samples of living factors that need nonliving factors:

Plants need water and nutrients and carbon dioxide

Animals need water and oxygen and vitamins

Ecosystems Biotic Factors Living

parts of an ecosystemThese are organisms

that exist in nature and balance the living world

If part of the biotic part of an ecosystem dies, what happens to the rest of the system?

Increases and Decreases in organismsExamples of Biotic

factors:

Samples of what happens when a biotic factor dies out:

If a forest fire moves through a forest, the birds fly off, the trees would be burnt, the air would be smoky, but the soil would be enriched with nutrients

Natural VS Non-natural ChangesNatural Changes to

an Ecosystem:Non-natural Changes

to an Ecosystem:

BiomesSpecific types of

ecosystems and environments that have certain types of climates and biotic factors Three Types

Polar TemperateTropical

Polar Biome

Polar BiomesClimate Conditions Animals and Plants

Temperate Biomes

Temperate BiomesClimate Conditions Animals and Plants

Tropical Biomes

Tropical BiomesClimate Conditions Animals and Plants

Climates will shape the types of animals and plants that are found in themTropical biomes will have increased types of

animals and plantsWhy? Animals and plants tend to grow and

reproduce more in warmer, wetter climatesPolar biomes will have decreased types of

animals and plantsWhy? Colder climates are harsh conditions for

plants to grow in, which means less food for animals

Temperate biomes have larger human populationsWhy? Humans prefer the milder climates

Relationships in Biomes

Describe this Biome

Describe this Biome

Name the Abiotic and Biotic Factors

Name the Abiotic and Biotic Factors

Organize the following words into TWO lists, Abiotic and Biotic Factors:

A cell

Because all of the organisms in an ecosystem are connected, they are all joined together in large food webs of interconnectedness.

Food webs are defined as collections of food chains, where one species is eating another, which eats another, which eats another until you reach a top predator

Food Webs

Each species in a food web is in a populationA population is defined as a collection of

the same species living the same areaMinor to major changes in food webs can

lead to ripples that can flow from one part of the web to the nextIf a top predator dies, then there will be an

increase in the population that it eatsIf a drought occurs, then your producers

(plants) die off which means a lot of animals that each plants is have a decrease in their populations

Food Webs

Changes to a Food WebIf the change is

natural:It is easier for a food

web to recover from Consumers can

change their habits more quickly to prevent starvation

In most cases, the change is slow

If the change is unnatural:Food webs are

disturbed greaterProducers are the

ones that feel the change the most

In most cases, the change is faster and food webs do not recover as fast