Science 1
What is "overfishing"?
Killing more fish than can be replaced, therefore reducing the fish population in that area!
What are some activities that would help the environment if a lot of people did them?
- Recycling
- putting on warm clothing instead of turning up the heat
- using a fan instead of air conditioning or opening windows at night
Which country has the worlds largest population?
China
What is pollution?
The contamination of Earths land, water, and air
What are some causes of pollution?
not recycling, the burning of gasoline, increases in population, and factors such as chemicals, wastes, noise, heat, and light
What is one negative effect of overfishing?
- Few Fish are left to reproduce
- So fewer fish are left to eat! Not just for people, but for the animals that love to eat fish in the wild too!
What organisms thrive in our area of Towanda Pennsylvania?
Insects, worms, mosses, algae, bacteria, animals
why does the increase in population lead to increase in pollution?
more people require more resources
Forests provide people with.....
Lumber, Paper, Oxygen
what is "extinction"?
when an entire species has died and no longer lives on earth
Coral reefs make up less that ____ percent of the Earths ocean, however they are home to about 20% of the worlds saltwater fish species
1 percent
what is "poaching"
hunting and killing or hunting and trapping a breed of animal without permission
what are endangered species ?
a species of animal that is at risk of extinction
How can setting limits on what size a fish has to be can be caught help the environment?
the young fish will be more likely to survive and reproduce other fish
more than _____ the animal protein eaten by people throughout the world comes from fish!
Half
What causes extinction and endangered animals?
habitat destruction, poaching, pollution, increased population of people, introducing a species to a different environment ( Florida and the everglades )
what is "biodiversity"
The number of different species in an area
what is "aquaculture" ?
the practice of raising fish and other water dwelling organisms for food: aka "farm raised fish" check out your local grocery store next time to see if the package says "wild caught" or "farm raised"
In the last 350 years, the Earths population has grown by over _____ billion people
5 billion people!!!
Because new trees can be planted to replace trees that have been cut down or have died, forests can be _______ resources.
renewable
The energy saved in recycling 1 aluminum can is equivalent to the energy in _______ cup/cups of gasoline?
1 cup
What is bigger than the United States and Mexico combined, is covered by more than 2 kilometers of ice, is a habitat for many animals, and is a source of oil, coal, and iron?
Antarctica
Anything in the environment that is used by people is called a ___________ resource
natural
in 1998, 26 nations banned the mining and oil exploration in Antarctica for at least _________ years?
50
Nonrenewable resources are ............
Natural resources that are not replaced in a useful time frame : such as coal or oil