Unit 1: Intro to ENV MGMNT Flashcards
What’s the meaning of sustainability?
Development which meets the needs of the present without compromising the ability of the future generations to meet their own needs
What are the three parts of sustainability?
Strong economics, healthy enviroment, just society
How many continents are there, and what are the names?
There are 7: North America, South America, Oceania, Europe, Antartica, Asia, and Africa
How many oceans are there, and what are the names?
There are 5: Pacific Ocean, Atlantic Ocean, Indian Ocean, Southern Ocean, and the Artic Ocean
What is the atmosphere made up of?
78% nitrogen, 21% oxygen, 0.04% carbon dioxide, >1% argon, >1% other gases (including water vapor)
What is the troposphere?
- It’s the first layer of the earth
- It contains most of the water vapor
- And is where global warming occurs
What is the statosphere?
- It’s the second layer
- The ozone layer is found there
What’s the mesosphere?
- It’s the third layer
- The air density, air pressure, and temp decreases with altitude
- It’s the coldest layer
What’s the thermosphere?
- It’s the fourth layer
- The temp increases with altitude
- Radiation from the sun removes electrones from oxygen and nitrogen atoms forming ions
What’s throughflow?
It’s the sporadic horizontal flow of water within the soil layer
What’s Interception?
It’s when the water coming from percipitation is trapped by tree canopies and buildings
What’s infiltration?
It’s when water above ground moves underground
What’s runoff?
It’s when water coming from rain that moves on the surface moves downslope
What is groundwater (Aquifer)?
It’s water thats stored in pore space of premeable rock & sediment layers
What causes saltwater intrusion?
When excessive pumping near the coast lowers the water table pressure, allowing saltwater to seel into ground water.
When is the hydrolic system a closed system?
When it’s on a global scale
When is the hydrolic system an open system?
When it’s on a local scale
Define population
It’s a group of individuals belonging to the same species
Define community
It’s a group of organisms living together as an ecological entity
Define an ecosystem
It’s an interactions between living organisms and abiotic factors in an area
Define a biome
A large geographic area that has similar climate, soil, and vegitation
The place an organism is found is called a:
Habitat
What’s a niche?
It’s the full range of enviromental conditions under which an organism have in a community
The hierarchy of feeding relations which determines the energy flow is called:
The trophic structure of ecosystems
- It supports all other levels
- Derives energy from the sun/chemicals
- The 1st tropic level
- Producers
- Feeds on producers
- 2nd trophic level
- Primary consumer/herbivor
- Feeds on primary consumers (and sometimes producers)
- 3rd trophic level
- Secondary consumer
- Carnivors/Omnivors
4th Trophic Level
- Third level consumers
- Feeds on secondary consumers
5th Trophic Level
- Forth level consumers
- Feeds on third level consumers
What’s a food chain?
The sequence of organisms each which is a food source of food for the next
How much energy is lost and why?
Food Chains
90% is lost because of heat and respiration
Where does photosynthesis take place?
In the chloroplast of plant’s leaves
What is aerobic respiration?
It’s when the glucose and oxygen come together to producer carbon dioxide and water
Abiotic will be in the slow cycle because
it’ll take hundredds of years to break down to CO2
Biotic will be in the fast cycle because
It’ll break down in a few decades, which is faster compared to the slow cycle
Intraspecific competition
competative interactions between members of the same species
Interspecific competition
competative interactions between members of different species
Parasitism
when an organism negatively affects another organism without killing it
Mutualism
When two organism’s benefit from interacting with each other
