### failure | loss:

Habitat loss
* are a major threat to biological diversity.
* can take many forms.
* caused by land clearing remains the biggest single threat to biodiversity.
* causes even more damage than motor boats
  - most extinctions today
* continues today both in terms of quantity and quality.
* danger to the whooping cranes.
* encompasses deforestation and overgrazing.
* is also a factor in their demise.
* is also a major threat to rhinos
  - the tapir
* is another contributing factor in amphibian population declines
  - primary reason for the dodo bird extinction
  - reason for the decline of the tigers
  - currently the most significant threat to the future of wildlife and wild places
* is likely another contributing factor in Pacific Coastal population declines
  - the primary cause of all species declines in Canada
  - now the leading threat to wildlife in the Americas
  - often the primary factor threatening a species' existence
  - only one of several significant threats to the tiger's survival
  - perhaps the gravest threat to regional biodiversity
  - something that people do
  - still an issue, as is lead poisoning
  - sure to be a contributing factor to the demise of lake sturgeon
  - the greatest problem facing Neotropical migratory songbirds and other wildlife
* is the greatest threat to most species
  - the conservation of wild species
  - largest threat to tenrec species
  - leading threat to wildlife populations in California
  - main threat to lemurs today, as people clear their native forests for farm land
* is the major problem facing the spectacled bear
  - reason for the decrease in the bird population
  - threat to the Asian elephant
* is the most common cause of the decline in wildlife populations
  - immediate cause of low braya population numbers
* is the number one cause of extinction
  - loss of wildlife
  - threat against wildlife today
* is the primary reason for species endangerment
  - threat to the sun bear
  - principal cause of species imperilment in Alabama
  - silent killer
  - single greatest threat to species throughout the world
  - when humans alter natural habitats
* major factor in salmon decline.
* means it's habitat is being destroyed.
* occurs all over the world
  - in many forms
* poses the greatest threat to orangutan survival
  - wildlife resources
  - woodpeckers
* poses the single biggest threat to cougars in the West
  - greatest threat to the mountain gorillas
* reduces the prospects of recovery of populations already depleted by hunting.
* remains the greatest threat to the grasshopper sparrow today.
* threatens their future, as it does that of all carnivores.

### failure | loss:

Heat loss
* Most heat loss is through windows.
* increases dramatically with increases in wind speed.
* is inhibited by the intense vasoconstriction
  - minimized by vasoconstricting the vessels supplying the skin
  - one of the steam engine's greatest inefficiencies
  - performed by blood convection to the comb, wattles and feet
* is reduced by feathers, hair and subcutansous fat
  - either by a heavy layer of fat called blubber, or a heavy coat of fur
  - so rapid that it is often impossible to maintain the normal body temperature
* is the biggest problem that stars and planets face
  - primary characteristic of inefficiency and can be caused by numerous reasons
* occur by infiltration when there are cracks around the frame or glass
  - when summer heat fails to come into the house
* occurs through convection in large leaves.

Insertion loss
* is the attenuation in decibels for a particular path through the device
  - loss of power through the transformer
* measures the total power loss due to attenuation and reflection.