The Environment, Levels of Ecology and Ecosystems

Which concept best describes ecology? How organisms interact with each other. All concepts describe ecology. How organisms are affected by their environment. How organisms affect the environment they live in.

All concepts describe ecology.

What is a population? All of the individual organisms of all the different species within a geographical area. All of the communities within a geographical area. A group of organisms of the same species that live together and function as a unit. All of the ecosystems on the planet combined. All of the individual organisms belonging to the same species within a geographical area.

All of the individual organisms belonging to the same species within a geographical area.

Which of the following is true about all environments? An environment cannot be smaller than a house. An environment cannot be larger than a continent. An environment includes factors such as temperature, light, water, air, soil, and nutrients that surround an organism. An environment cannot be changed by the organisms living in it. An environment must be strictly abiotic.

An environment includes factors such as temperature, light, water, air, soil, and nutrients that surround an organism.

What is an ecosystem? The populations of all species and all abiotic factors within a geographical area. The populations of all species within a geographical area All abiotic factors within a geographical area All of the environments and all of the communities on the planet All of the individual organisms belonging to the same species within a geographical area

The populations of all species and all abiotic factors within a geographical area.

organism

an individual living thing that is capable of responding to stimuli, growing, reproducing and maintaining homeostasis

biosphere

includes all the ecosystems on the planet.

community

is composed of all organisms of all species in a geographic area

ecosystem

is composed of the community and all abiotic factors like weather, water, soil and elevation within a geographic location

abiotic factors

nonliving environmental factors that surround an organism

Ecosystem ecology

often used when studying energy flow

what are Communities comprised of?

so many different species of organisms that community studies are difficult to execute all at once

Environmental factors

temperature, light, water, air, soil and nutrients that surround an organism

what is biosphere ecology often?

the level of study used when tracking the movement and distribution of various key elements and biological molecules, like oxygen, nitrogen, carbon and phosphorus

The lowest, most basic level at which ecology is studied is: the cellular level the biosphere the population level the organismal level the molecular level

the organismal level

environment

the set of conditions that surround an organism

Ecology

the study of the interactions between organisms and the environment they live in

what do all organisms in a particular geographic area that belong to the same species make up?

they make up a population