8Sci - Ch.8 Study Guide
Why is it important to have laws that regulate the number and the size of fish that can be caught?
Because they could either become extinct or they could become not being big enough to survive
What are two harmful fishing methods that have been outlawed?
large nets and small fish
The mating and caring for of a species in a zoo is an example of what?
Captive Breeding
What is the difference between selective cutting an clear cutting?
Clear cutting is cutting down all trees and Selective cutting is only cutting down certain trees.
List the pros and cons of clear-cutting
Cons, habitat destruction, stream flow increase, it kills trees Pros, More sun for other trees, more area,
If fish are caught faster than they can breed, what will happen to their population?
Decrease
If all members of a species disappear from Earth, the species is said the be what?
Extinct
What do we call an area with a large population of valuable ocean organisms?
Fishery
What do we call the loss of a natural habitat?
Habitat Destruction
What will happen to our natural resources if the population continues to grow
It will decrease
What is the difference between a renewable resource and a nonrenewable resource?
Non renewable resources are resources that are limited. Renewable resources replenish themselves over time.
Trees help other organisms by producing what gas? And absorbing what gas
Produces oxygen and absorbs carbon dioxide
List five renewable resources and five nonrenewable resources.
Renewable - solar energy, oxygen, timber, fresh water, wood Non Renewable - Fossil Fuels, natural gas, coal, oil, metal ores.
Define Biodiversity
The number of different species in an area
Define aquaculture
The practice of raising fish and other water dealing organisms for food.
Define environmental science
The study of national processes in the environment and how humans can effect them
The exhaust fumes from automobiles are an example of what?
Vapor, or Pollution
Pollution is the contamination of what three things?
Water, air, or food
List the pros and cons of selective cutting
pros, reduces surroundings and lets more trees grow. Cons, not profitable, trees don't get enough sun