Information about Unexpected Disasters .

Cat plague on Marivan Island.

Marivan is a small island in the Indian Ocean, in 1945, the first expedition from South Africa came here, a few mice that came with the ship also quietly slipped ashore, and in 1948, the mice became the overlord of the island, the expedition team transported in 5 cats to catch mice, but the taste of seabirds is better than mice, cats do not catch mice but eat birds, as a result, cats breed to 2,500, birds suffer, 600,000 are eaten a year.

Hawaii's snail plague.

In the thirties of the 20th century, some traders transported African giant snails to the Hawaiian Islands for human breeding and consumption. Some snails are old and inedible, so they are thrown into the wild, and within a few years, snails multiply in large numbers, everywhere, gnawing vegetables and fruits into a mess. People spray chemicals, and the land cannot be removed after 15 years of ploughing.

Goldfish Plague in Washington State.

Americans have long imported goldfish from Japan, and in 1973, some goldfish accidentally fell into the water of Washington state, and then multiplied in large numbers, and a few years later, goldfish took over 10 lakes; The trout in the lake could not compete with the goldfish for food, and the production was greatly reduced, and the fishicide could not kill the goldfish, and the fishermen complained bitterly.

Crab plague in Spain.

In 1976, Spain imported 50,000 crab fry from the United States and stocked them in the delta of a river. In a few years, hundreds of millions of animals are bred and the local population can only catch up to 4 million per year for human consumption. The water in the rice paddies drains down the dense crab holes; Crabs eat fish and shrimp, aquatic weeds, plankton, rice seedlings, and fish in the water, and birds do not eat them, and they do not stay here.

Dinosaurs from 100 million years ago can still appear For details, please see 2050 - an unexpected discovery - Tyrannosaurus rex.

1 These unexpected animal disasters tell us how important it is to maintain ecological balance.

2 Answer: The article details these animal floods: 1Blue crabs bite crops and disrupt people's lives; 2.Toads poison domestic animals and threaten humans; 3.Rabbits multiply in large numbers, forming a rabbit plague.

3 Hello, I am also in the fifth grade, my name is Wang Wending, Du Yunpeng 531 is my friend's number, he sent me!

1.These unexpected animal disasters show us how important it is to maintain ecological balance.

Blue crabs bite crops and disrupt people's lives; 2.Toads poison domestic animals and threaten humans; 3.Rabbits multiply in large numbers, forming a rabbit plague. 3.

Are you in 5th grade? You're in class 5.