American Bull frog - 황소개구리에 의한 생태계교란에 대해 발표한 영어피피티

소개글

중국 북경에 있는 대외경제무역대학에서 황소개구리의 생태계교란에 대해 영어로 발표한 피피티입니다.

목차

1. American Bullfrog is?
2. Problem of American Bullfrog
3. Damaged by American Bullfrog
4. Solutions and current situation
5. Conclusion

본문내용

Mexico, South Canada, East-north America, West-north America
Latin America, West India, Japan, Tailand, South Korea etc

<중 략>

1. Inflow of American Bullfrog
- Originally they were used for food or experiment

In Korea
For food and increasing of farmers income from Japan.
But, American Bullfrog were discharged.
Because it could not made profit.
And discharged frog made disturbing the ecosystem

2. Problem of American Bullfrog in South Korea
1) Spawn about 10000 to 25000 egg
2) High hatching rate
3) Fast breeding speed
4) Eat almost alive things

It made decreasing population of Koreas fauna and flora American Bullfrog shooked the roots of Food chain system

참고 자료

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