science chapter 2

Question 1

what are the ecosystem monitoring types?

Answer 1

physical

environmental

chemical

biological

Question 2

quadrant sampling is a technique used to

Answer 2

study a large area

Question 3

the quadrant is selected and the species is counted in the quadrant . studying the sample is called

Answer 3

quadrant analysis

Question 4

how can things in am ecosystem change?

Answer 4

1. bio invasion- accidental or planned introduction of a non-native species into a community
2. competition- all living things will compete for food, water and an environment to live
3. predation - when a animal hunts other animals for food
4. weather- floods, fires, droughts, etc

Question 5

a climax community is a stable community

Answer 5

with a lot of diversity and is not easily replaced by other communities

Question 6

secondary succession

Answer 6

the gradual growth of organisms in a area after a

Question 7

primary succession

Answer 7

is the gradual growth of organisms in an area that was previously bare, like a rocky slope

Question 8

the first species established in an environment are called a

Answer 8

pioneer species

Question 9

name some pioneer species

Answer 9

grass
lichens
mosses

Question 10

name a species of a climax community

Answer 10

paper birch
white spruce
aspen