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