Flashcards in October 28 Deck (18):
What percentage of species to inhabit the earth are extinct?
How has the human race affected the extinction rate?
Name four species extinct as a direct result of human over hunting.
Stellers sea cow
Define ecologically extinct.
Animal still exists but small population cannot sustain its ecological role
Species is extinct from local area but exists elsewhere
Give an example of a trophic cascade
Sea otter eats sea urchin eats kelp which house fish which are eaten by Eagles
What is prey switching?
Animals adapting to new situations
Define contemporary evolution.
Evolution of biological traits based on interactions with humans. Fish have decreased in size
Name two reasons for hunting exotic endangered animals.
True or false
Sea horses are considered an aphrodisiac
What does CITES stand for?
Convention of international trade endangerment schedule
What is a dugong?
A marine animal related to the sea cow in Australia. Tusks are protection and they sleep on sea grass beds
What part of the dugong is used to make love potion?
Name two reasons elephants are hunted.
Value and they compete with humans for space
What two continents are elephants from?
Asia and Africa
How do you differentiate Asian and African elephants?
African elephants have bigger ears and the Asian males have tusks
Define trophy hunting
Hunting for sport