Задание

Complete the gaps with the sentence parts. There is one extra option

Прочитайте текст и заполните пропуски A–F частями предложений, обозначенные цифрами 1–7. Одна из частей в списке 1–7 лишняя. Занесите цифры, обозначающие соответствующие части предложений в таблицу.

Indicator species

When looking around outside, many people see reasons to worry about the environment. Often, what they notice are the effects of pollution and climate change, A where they live. Understanding the condition of all living and non-living things in an ecosystem is important for maintaining a healthy environment. But collecting information on every element in an ecosystem takes time and effort and is not always possible.

Luckily, scientists know that collecting data on the condition of one species, called an indicator species, B an ecosystem. Researchers measure and monitor the health of indicator species to determine whether the environment where these special animals and plants live is healthy. Without indicator species, C conduct more tests. Tests and samples can cause disturbances in the environment. Also, when there is more work to do, scientists must find both the time and money to conduct that work.

Here is an example of how indicator species D . To check on forest habitat quality, researchers look for red cockaded woodpeckers. These birds are picky about their nests, and E , the woodpecker numbers drop. Fewer woodpeckers suggests it is time to pay attention to the health of the forest.

Based on what they learn from observing and studying indicator species, F and posting signs about fishing rules.

scientists must collect many more samples and

park managers can make decisions about restoring plants

which are environmentally friendly and useful for

which can be harmful to people, wildlife, and the ecosystems

can help researchers understand environmental conditions

can reveal a lot about the well-being of other species in

if the right combination of trees is not present

A

B

C

D

E

F

The maximum score is 2 points for 6 correct answers.

5 correct answers — 1 point.

4 or fewer correct answers — 0 points.

The score for the task: out of 2.