ChapB1.3

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Information about ChapB1.3

Published on October 31, 2007

Author: stviator4b

Source: slideshare.net

Description

Living

Living Things in Ecosystems Homes for Living Things habitat : an environment that meets the needs of an organism

some habitats include whole ecosystems birds that can fly from place to place others are only a small part of the ecosystem fungi that can only be found in certain places on the forest floor some habitats overlap and include the same areas organisms compete – try to get the same food/space 2 species of fish living in the same pond trying to get the same insect

some habitats include whole ecosystems

birds that can fly from place to place

others are only a small part of the ecosystem

fungi that can only be found in certain places on the forest floor

some habitats overlap and include the same areas

organisms compete – try to get the same food/space

2 species of fish living in the same pond trying to get the same insect

very different organisms do not need to compete birds and caterpillars live in the same habitat but have different ways to meet their needs birds eat caterpillars while caterpillars eat leaves

very different organisms do not need to compete

birds and caterpillars live in the same habitat but have different ways to meet their needs

birds eat caterpillars while caterpillars eat leaves

Roles niche – an organism’s role niche includes all the ways it meets its basic needs how it gets shelter, how it produces young, and how it gets food and water sun main source of energy for all living things animals eat plants, which use sunlight to grow or animals eat other animals that eat plants, which use the sunlight to grow

niche – an organism’s role

niche includes all the ways it meets its basic needs

how it gets shelter, how it produces young, and how it gets food and water

sun main source of energy for all living things

animals eat plants, which use sunlight to grow or animals eat other animals that eat plants, which use the sunlight to grow

food chain : the way energy moves through ecosystems connect and overlap to form food webs food web: shows where many types of living things in a community get food food chains have 3 levels green plants and some protists/monerans are producers – they make their own food consumers eat other living things for energy – insects, frogs, lions, humans decomposers feed on the wastes of plants and animals or on their remains after they die they return nutrients to the soil for plants to use as the cycle begins again

food chain : the way energy moves through ecosystems

connect and overlap to form food webs

food web: shows where many types of living things in a community get food

food chains have 3 levels

green plants and some protists/monerans are producers – they make their own food

consumers eat other living things for energy – insects, frogs, lions, humans

decomposers feed on the wastes of plants and animals or on their remains after they die

they return nutrients to the soil for plants to use as the cycle begins again

 

Causes of Change as organisms meet their needs they affect their environment usually changes are small and help keep ecosystem stable some changes affect other organisms insects are in a bird’s habitat birds eat insects and that keeps the insect population from growing too large when there are too many birds eating insects the population reduces quickly : there will not be enough insects for birds to eat

as organisms meet their needs they affect their environment

usually changes are small and help keep ecosystem stable

some changes affect other organisms

insects are in a bird’s habitat

birds eat insects and that keeps the insect population from growing too large

when there are too many birds eating insects the population reduces quickly : there will not be enough insects for birds to eat

to balance out the habitat (keep stability) some birds will leave the area, some birds will die, and fewer baby birds will be born this allows the insect population to grow some changes affect nonliving parts of the ecosystem worms/lichens make soil of their habitats better prairie dogs dig holes in rangeland this is a negative change for humans because the holes are dangerous for grazing cattle and sheep over time most changes in nature balance out and stability is kept

to balance out the habitat (keep stability) some birds will leave the area, some birds will die, and fewer baby birds will be born

this allows the insect population to grow

some changes affect nonliving parts of the ecosystem

worms/lichens make soil of their habitats better

prairie dogs dig holes in rangeland

this is a negative change for humans because the holes are dangerous for grazing cattle and sheep

over time most changes in nature balance out and stability is kept

Summary environment that meets the needs of an organism is its habitat organisms role within its habitat is its niche as organisms fulfill their role, they affect both living and nonliving parts of the ecosystem

environment that meets the needs of an organism is its habitat

organisms role within its habitat is its niche

as organisms fulfill their role, they affect both living and nonliving parts of the ecosystem

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