Wild Species and Biodiversity
How many species have we classified on earth?
2 million ~
What is natural selection over very long periods of time?
Natural selection
What is a type of organism that creates it's own food?
Producer
What is a biome?
a large geographical biotic community, controlled by climate. Biomes are usually named after the dominant type of vegetation, or plant life.
What happens to a population if they do not have a trait that allows them to survive a change in the envionment?
They die or go extinct in the area
What species is the greatest threat to biodiversity?
Humans
Give an example of an adaptation and explain how it is helpful
~~~~ Mr. Murphy's call
What is a type of organism that must eat producers?
Consumers
What is the difference between an autotroph and a heterotroph?
autotrophs make their food while heterotrophs have to consume others for food
Give an example how humans lower biodiversity in an area
Mr. Murphy's call
50% - if one crop fails then SO much of the world's food is lost.
What happens to most young organisms that drives natural selection?
They die and those that survive pass on better traits
Where does all energy come from and how does it make it to higher level consumers?
Sun - passed up in the form of chemical energy to larger organisms
Explain the role of a decomposer and why it is necessary for an ecosystem
They recycle the nutrients back into the soil for the plants. Allowing plants to grow and produce sugar
HEAT energy
What is the difference between instrumental and intrinsic value?
Instrumental is value we actually get from an organism, while intrinsic is value derived from how much you appreciate the organism's existence
What is fitness?
The ability for an organisms to pass on its genes to the next generation
An eagle eats a snake, which ate a mouse, which ate some grass seed. What level consumer is the eagle?
Tertiary *(3rd level) consumer
What are some things being done to help endangered species besides listing them as endangered?
Mr. Murphy's call
What is happening with biodiversity in most cultures and societies around the world?
What is one of the biggest benefits to humans from a high biodiversity? Why?
Money - all the biodiversity supports so many economies from fishing to art supplies
When the environment you find yourself in changes, what are your options?
Give an example
Adapt, move, or die.
How much energy is "lost" from one level to the next, and hopw much energy remains as biomass?
90% is lost and 10% remains in the new organism as biomass
Can loosing one organims in an ecosystem be worse than losing another? Why or why not?
Yes - losing bumble bees complete would mean a near collapse of all flowering plants while losing pill bugs would mean a different detritivore taking its place
What is the difference between a food web and a food chain?
A food chain is seeing a single flow of energy move up while a food web is all the food chains put together