science

Episode 01

LIVING THINGS AND THELIVING THINGS AND THE ENVIRONMENTENVIRONMENT

OBJECTIVE :OBJECTIVE : In this unit we will In this unit we will study the different rolls and study the different rolls and impact that the living things impact that the living things

have on the environment. There have on the environment. There will be a strong focus in the will be a strong focus in the

interaction that organisms have interaction that organisms have among themselves and the among themselves and the

environmentenvironment

How is a cat similar and different from a fish besides the physical appearance ?

Organisms that live in different habitats

el “ Gato volador ”el “ Gato volador ”

What is an Organism ?

It’s a Living thing that has (or can develop) the ability to act or function independently

Where do organisms live?

They live in their habitats

What is a habitat?

It is the physical space that has all the propped conditions for an organism to live,

and reproduce. It has to provide the necessary food and water needed to

survive

Do you think that only one specie can live in a habitat?

NO - many species can live in the same habitat

What are species ?

Species are often defined as a group of organisms capable of interbreeding and producing fertile offspring.

What is a population?

Group of organisms of the same specie

C o m m u n i t C o m m u n i t yyIt is a group of populations living together

and interacting with each other - sharing the same food, places, shelter, water resources,

etc, etc . . .R e e F Forest

What is a community ?What is a community ?Is a group of different Populations living

in the same area

Giraffes population

Lions population

Hippopotamus population

Take a look at this place

this is the community of the Reefthis is the community of the Reef

What are the “ Abiotic ” factors?

are the Non-Living components of an area, such as air, rocks, soil, water, climate and shelter

What are the Biotic factors?

are the Living Organisms of a given area - animals, insects, bacteria, , plants and

humans

if you take some Biotic factors

then choose an Abiotic factor

And put them

together

> That is an Ecosystem <

YEAHYEAH!!

Limiting Factors

• A factor or limiting resource is a factor that controls a process, such as organism growth or species population, size or distribution. The availability of food, predation pressure, hard temperatures or availability of shelter are examples of factors that could be limiting for an organism. An example of a limiting factor is sunlight, which is crucial in rainforests.

• Another example is rain, which can bust an ecosystem in two ways. One way is rain can destroy an ecosystem is flood. Flooding can wash away shelter, food, and even parts of the life-form's population itself. The other way rain can destroy an ecosystem is drought. The main way it can destroy an ecosystem is the depletion of food sources.