Topic 6 - Succession And Change In Ecosystem

Question 1

Indicator species

Answer 1

Plant or animal species that help to indicate environmental change

Question 2

Environmental Impact Assessment

ELA

Answer 2

A report that outlines how an activity will affect the environment

Question 3

Succession

Answer 3

The process by which new species gradually replace old species in an ecosystem

Question 4

Primary succession

Answer 4

The gradual growth of organism in an area that was previously bare, such as rock

Question 5

Secondary succession

Answer 5

The gradual growth of organisms In an area that previously had a umber of organisms. The regeneration of a burned forest area for example

Question 6

Introduced species

Answer 6

Species which are introduced into an environment where they are not naturally found

Question 7

Extinct

Answer 7

When a species no longer exists anywhere in the world

Question 8

Permanent plots

Answer 8

Study areas

Question 9

Biological control

Answer 9

Controlling insect pests by using their natural enemies

Question 10

Baseline data

Answer 10

Information gathered by scientists to be used as a starting point to compare changes in the environment

Question 11

Ecosystem monitoring

Answer 11

A method of checking the condition of an ecosystem by comparing investigation result done at different times