WEEK 14 Flashcards
(17 cards)
the” variety “present in all forms of life
Biodiversity
variation of “genes” within the species that gives
distinction of one population from another even of the
same species
Genetic Biodiversity
variety of “species” within a particular region
• similar species are grouped together in families, families in orders up to kingdoms
Species diversity
the number of species in a community of organisms
• variations of “climatic and altitudinal” conditions and “ecological habitat”
ECOLOGICAL DIVERSITY
Society benefits a lot from the richness of
biodiversity
foods, energy, timber and
pharmaceutical products
• regulation of climate, water storage,
flood control, buffering against extreme
weather events, treatment of water and
air, regeneration of soil fertility,
decomposition of wastes
___________ provides critical habitat for fish, waterfowl, and wildlife, and helps maintain
high levels of plant and animal diversity.
flooding
provide natural filtration and storage
systems to provide freshwater.
forests
create conditions that
promote the infiltration of “rainwater” into the
soil to fill up the aquifer systems with
groundwater while percolation occurs running
surface water into “rivers and lakes.”
roots and leaves
Forests play major role in hydrological cycle by
affecting rates of transpiration and evaporation
and water storage in watersheds.
Floodwaters also replenish agricultural soils with nutrients and transport sediment that
is necessary to maintain downstream delta and coastal areas.
A study conducted by________ (2012) shows that biodiversity has been affected
by the usage of different forms of energy, primarily the fossil fuels.
Nathan Jones
In 2000s, a number of catastrophic events transpired, i.e.,
• climate change
• coal ash spill in Tennessee
• oil spill in the Gulf of Mexico
• Fukushima nuclear crisis in Japan
At the end of 1980, the __________ became the biggest oil spill in U.S. waters
Exxon Valdez disaster in Alaska
In 1979, __________ at Three Mile Island near Middletown, Pennsylvania.
a nuclear reactor accident
In 1600s, coal and the British discovered that cooking coal transforms it into hot-
burning coke
In 1700s, coal began to replace other energy sources became the primary source
of energy around the world.
In 1820s, natural gas was used as a source of light
In 1830s, the electric generator, motor and relay were developed based on
Michael Faraday’s discovery of electromagnetism
In 1850s, commercial oil was drilled and led to distillation of kerosene from
petroleum
In 1860s, Augustine Mouchot developed the first solar powered system for
industrial machinery
n 1892, the first utilization of geothermal heat to power was done.
In 1942, the first nuclear fission reactor was designed and built
