Ecosystems and The Spheres of the Earth

Test os on Friday

What does “Biotic” mean?

Living: Humans, Bacteria, Dogs, Cats

What does “Abiotic” mean?

Non-living thats helps living things: desk, air, sun, chromebook

What is an ecosystem?

All of the organisms that share a region and interact with each other in a non-living environment.

All components are…

Interrelated meaning they all effect each other

Why is sustainability important?

Without sustainability ecosystems are not able to maintain natural conditions without interruption, weakening, or loss of biodiversity over long periods of time.

What are Natural and Artificial ecosystems?

N: occur overtime due to the effects of nature

A: planned and maintained by humans

Types of Natural ecosystems:

Aquatic: water body

Terrestrial : land living

What is Biodiversity?

the number of different species in an ecosystem

What is Ecology?

how the species interact with each other in their environments

Levels of ecology:

Individual, population, community, ecosystem, biosphere

What is a Habitat?

A place where an organism lives

What is an Ecological Niche?

Interactions with species. Includes what it eats, where it lives, and how it behaves.

What are the four main spheres?

Atmosphere: Air

Lithosphere: Stone/Land

Hydrosphere: Water

Biosphere: Life

How do the spheres interact with each other?

Ex: The rain falling on the oil creates grass. Having a cow eating the grass and exhaling carbon dioxide.

What is the Gaia Hypothesis and why is it important?

It has proposed that earth behaves like a living organism due to interactions among the four spheres. It encourages caring attitude towards the Earth and the life it supports.

The Atmosphere is made up of…

About 78% nitrogen , 21% oxygen  and 1% other gases

How much of Earth’s water is in the oceans?

97% of water