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Predator
• A predator is an animal that feeds on other animals in order to survive.
• Some examples would be bears, coyotes, snakes
• Some predators can also be prey as well, like sometimes lions eat other lions
• Most of the time predators herbivore
Prey
• Prey are the animals eaten to keep other animals alive.
• More often then not the animals eaten are herbivores.
• Some examples of prey are bunnies, mice, and fish.
Autotrophs v. Heterotrophs
• Autotrophs– Produce food from the
sun
• Heterotroph– Must eat other things
(living or non living) for energy
Carnivore
• Animals that eat meat, mostly other animals that are smaller than they are or less fierce.
• Some examples of carnivores– Bobcats– Coyotes– Owls– Praying mantis
Herbivores
• Herbivores are animals that eat plants and greens such as leaves and grass.
• When herbivores eat it is usually called grazing.
• An example of an herbivore would be a rabbit or goat.
Omnivore
• An omnivore is an animal that eats plants and other animals.
• An example of an omnivore would be a bear because a bear eats berries and fish.
FOOD CHAINS AND FOOD WEBS - illustrate the flow of energy in an ecosystem
*Note the direction of the arrows: they indicate where the energy is going when
one organism consumes another.
Each step in a chain or web is called a TROPHIC LEVEL
Identify• Autotroph
– Two sets of leaves
• Primary consumer– Mouse, cricket, rabbit, squirrel
• Secondary consumer– Fox, mouse, frog, snake
• Tertiary consumer– Fox, owl, snake
• Omnivore– mouse
Mammal
• Mammals (formally Mammalia) are a class of vertebrate, air-breathing animals whose females are characterized by the possession of mammary glands while both males and females are characterized by hair and/or fur, three middle ear bones used in hearing, and a neocortex region in the brain. Some mammals have sweat glands, but most do not. Give birth to live young.
Endangered
• Pose a threat to go extinct. • Some endangered animals are
– Gray wolf, Mexican bobcat, West Indian Manatee, and the jaguar.
Extinct
• No longer in existence.• Some animals that are extinct are
– Barbados Raccoon, Bulldog rat, and Dark flying fox.
Why animals go extinct or become endangered.
• Loss of habitat• Low food source • Not enough room to live• Poachers• Pollution• Killed of by other animals• Disease
Major causes of habitat loss in Pa.
• Deforestation • Water pollution• Mining • Logging• Trawling- when boats use nets to catch fish.• Urban sprawl- when cities get bigger• Noise pollution
How we can help.
• Reduce• Reuse• Recycle• Refuse• Car pool• Turn off lights when not in use.• Use energy saving light bulbs.• Reuse unbleached recycled paper.