I' The Marine Ecosystem

1
I. The Marine Ecosystem

• Q1.
• Marine creature (????)
• algae, seaweed
• Producers (???)
• jellyfish, krill
• Primary consumers (?????)
• shark, squid
• Secondary consumers (?????)
• Q2.
• There is a feeding relationship among them.

2
I. The Marine Ecosystem

• Q3.
• It is a feeding relationship in an ecosystem.
• Q4.
• It is a self-supporting system (???????) which
  includes (??) all the living things and their
  environment (??).

3
II. What is over-fishing

• Q1.
• Bad weather (??), fishing ban period,
  over-fishing, red tides (??).
• Q2.
• As the worlds population continues to grow, the
  demand (??) for fish also keeps increasing.
• Due to the advanced technology (????) in fishing
  methods, the total fish catch of the world has
  doubled (??) between 1970 and 2000.

4
II. What is over-fishing

• Q2.
• If we catch fish at a faster rate than they can
  reproduce (??), the fish resource will gradually
  (???) be exhausted(??). This is called
  over-fishing.
• Over-fishing is harmful (??) to the marine
  ecosystem.

5
II. What is over-fishing

• Q3.
• a) attractive market value (?????)
• Y
• b) huge demand (???)
• Y
• c) rural poverty (????)
• Y

6
III. What can we do?

• Q1.
• Fish farming (???)
• Fish farming is the rearing (??) of fish for
  sale (??) as food.
• In Hong Kong, many fish culture zones (???) have
  been set up. It can produce (??) fish all the
  year round.
• Therefore, fish farmers enjoy a more stable (??)
  income.

7
III. What can we do?

• Q2.
• Fish ban period (???)
• During the fish band period, fishing is not
  allowed (???).
• At the same time, fish, shrimps (?) and
  seashells (???) are released into (??) the sea in
  order to speed up (??) the recovery (??) of the
  fish production.

8
III. What can we do?

• Besides (??) China and Hong Kong, many countries
  have their own methods (??) to prevent (??)
  over-fishing.
• International cooperation (????) is needed to
  save (??) the marine animals (????) of such
  public properties (????).