Задание №16263 ЕГЭ по Английскому языку

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Monarch Butterflies on New Endangered List

Scientists now consider the migrating monarch butterfly to be endangered. The population of the beloved orange-and-black insect has dropped quickly in recent years. The International Union for the Conservation of Nature (IUCN) added the migrating monarch to its “red list” of threatened organisms. They said it is “endangered”. That means it is two steps from being extinct. When a species is extinct, A                          . IUCN estimates that the population of monarch butterflies in North America has fallen between 22 percent and 72 percent over 10 years, B                          .

In North America, millions of monarch butterflies carry out the longest migration of any insect species known to scientists. Animals migrate when they move from one location to another depending on the season. Monarch butterflies spend the winter in the mountains of central Mexico. Then they start their journey to the north. They reproduce many times along the way, for thousands of kilometers. The young butterflies C                          then begin the trip back to Mexico at the end of summer. A smaller group of butterflies spends winters in coastal California, D                           across several states west of the Rocky Mountains. This population has seen an even sharper drop than the eastern monarchs, although there was a small increase last winter.

There are many reasons for the loss of the butterflies. One reason is that the insects have lost their habitat, or natural home, E                          . Another is an increased use for agriculture of herbicides (chemicals that kills plants) and pesticides (chemicals that kill insects.) The third reason is climate change. Nonmigratory monarch butterflies in Central and South America were not said to be as endangered. The United States has not listed monarch butterflies under the Endangered Species Act F                          .

1. because people are removing or harming the trees and plants they like to live on
2. then flies away in spring and summer
3. there are no more living members
4. depending on the measurement method
5. but several environmental groups believe it should be listed
6. that reach southern Canada
7. because young butterflies in the form of caterpillars are very vulnerable