Chapter 5 : Resources in Ecosystem

Question 1

materials that are found in nature that are essential or useful to people

Answer 1

natural resources

Question 2

the careful use of resources so that the will last as long as possible

Answer 2

conservation

Question 3

to process used products into new products by using the materials again

Answer 3

recycle

Question 4

to use items again after original use

Answer 4

reuse

Question 5

to use less of a resource

Answer 5

reduce

Question 6

the gradual long-term change of species in an ecosystem

Answer 6

succession

Question 7

when plants first take roots into an area where there is no plants at all

Answer 7

primary succession (after volcanic eruption : lava covers the area)

Question 8

when some vegetation are removed from an area, and start to grow back again

Answer 8

secondary succession (usually from human activities)

Question 9

the movement through Earth’s ecosystem of carbon as different forms

Answer 9

carbon cycle

Question 10

the movement of nitrogen in different forms from living organisms to the nonliving part of the environment and back

Answer 10

nitrogen cycle