Module 9 Flashcards
the application of science and engineering principles to improve the environment (air, water, and/or land resources), to provide healthful water, air, and land for human habitation and for other organisms, and to remediate polluted sites
environmental engineering
primary job of environmental engineers
conserve and preserve the ecology and environment
includes physical, chemical and biological components
environment (surrounding)
When a component surrounding an organism affects the life of an organism, it becomes a _______. All such factors together are called ___________.
factor, environmental factors or ecological factors
Environmental factors can be classified into _______ and ______ which make the environment of an organism.
living (biotic), non-living (abiotic)
Four Classes of Ecological Factors
- climatic factors
- edaphic factors
- topographic factors
- biotic factors
one of the important natural factors controlling the plant life
climate
This ecological factor include light, temperature, water, wind, and fire.
climatic factors
Climatic Factors
light, temperature, water, wind, fire
a well-known factor needed for the basic physiological processes of plants, such as photosynthesis, transpiration, seed germination and flowering
light
portion of the sunlight which can be resolved by the human eye
visible light
max rate of photosynthesis
at blue (400 - 500 nm) and red (600 - 700 nm)
this wavelength of spectrum is less strongly absorbed by plants
green (500 - 600 nm)
The visible part of light is made-up of wavelength from ______.
violet to red (400 nm to 700 nm)
affects many animals since light and dark often signals when to eat, sleep, hunt, migrate, or reproduce
light pollution
alters and interferes with the timing of necessary biological activities
light pollution
It is one of the easiest pollutions to clean up.
light pollution
It is a public or private land area possessing an exceptional or distinguished quality of starry nights and nocturnal environment that is specifically protected for its scientific, natural, educational, cultural, heritage and/or public enjoyment.
IDA International Dark Sky Reserve
It is one of the important factors which affect almost all the metabolic activities of an organism.
temperature
Every physiological process in an organism requires an optimum temperature at which it shows the _________.
maximum metabolic rate
It is any deviation from the natural temperature in a habitat and can range from elevated temperatures associated with industrial cooling activities to discharges of cold water into streams below large impoundments.
thermal pollution
It is one of the most important climatic factors; affects vital processes of all living organisms.
water
Three ways water is available to plants
atmospheric moisture, precipitation, soil water
air in motion
wind
can directly contaminate the surface of bodies of water and soil
air pollution
It is an exothermic factor caused due to the chemical process of combustion, releasing heat and light.
fire
It is mostly man-made and some-times develops naturally due to the friction between the tree surfaces.
fire
It is not a kind of pollution but it is a problem that destroys our ecology that uses fire as its agent.
forest fire
two ways forest fire can start
naturally caused, human caused
