Read the article and answer the questions. Competing for Resources
The resources of any one environment are limited. Depending on which plants and animals share the environment, there may not be enough of everything to go around. All organisms need water, food and shelter to stay alive. These resources are beneficial, which means they are good for the organisms. When an environment is low on any of these things, organisms must compete for them. Those who get to the resources first have the best chance of survival. Being without water, food or shelter for very long is detrimental, which means it is harmful to organisms.
The resources in an area determine how big the plant and animal populations can be. Sometimes there are too many living things in an area. The weakest of the populations will not be able to get the resources they need. As the weak die out, the populations get smaller. Finally, the area’s resources recover and can support them again.
Sometimes people will capture members of large animal populations and move them. They take them to another location with less competition. This helps the animals survive.
Sometimes the government will allow hunting of large animal populations. Deer and rabbits can be a good food source for people. When there are too many of these animals in an area, They sometimes come into the cities looking for food. They often cause trouble. Hunting keeps the number of animals under control.
Answer the questions.
1) Why do organisms sometimes have to compete for resources?
2) What kinds of things are beneficial for organisms?
3) What happens when populations grow too large for an area?

Exercise 1

Use the Past Simple or Past Continuous in the following sentences.

1. I am sitting in class just now. I (sit) in class at this exact same time yesterday.

2. I don’t want to go to the zoo today because it’s raining. The same thing happened yesterday. I (want, not) to go to the zoo because it (rain).

3. I (call) Roger at nine last night, but he (be, not) at home. He (study) at the library.

4. I (hear, not) the thunder during the storm last night because I (sleep).

5. It was a fine day when we went for a walk in the park. The sun (shine). A cool breeze (blow). The birds (sing).

6. My parents (argue) about something when I (walk) into the room.

7. I got a parcel in the post office. When I (open) it, I (find) a surprise.

8. Ton went to his friend’s house, but the boys (be, not) there. They (play) soccer in the yard.

9. Stan (climb) the stairs when he (trip) and (fall).

10. I enjoyed my holiday last January. While it (snow) in Iowa, the sun (shine) in Florida.

Exercise 2

Choose the correct world or phrase from each pair underlined.

1. While I washed /was washing my hair, the phone rang / ringed.

2. How did you felt / did you feel yesterday night?

3. When I reached / was reaching home I received / was receiving David’s phone call.

4. Last summer I was going swimming / went swimming every weekend.

5. When the dog bit / was biting Laura’s leg, she screamed / was screaming.

6. We sang / sung some songs and ate / eat some sandwiches.

7. When you fell / felt over the cliff, what happened / was happening next?

8. While Mary washed-up / was washing-up, she broke / was breaking a cup.

9. I didn’t see / didn’t saw where the bus-stop was, so I was missing / missed the bus.

10. What did you do / were you doing when I phoned / was phoning you last night?

Объяснение:

Объяснение:

1. What places have you visited in Ukraine recently?

2. When did you go there?

3. What did you means of tran by travel sport?

4. What did you see sights there?

5. Did you like your journey?

ВТОРОЕ УПРАЖНЕНИЕ:

1. British keep their traditions very carefully.

2. Egypt is famous for the Pyramids.

3. When they visited Scotland they stayed at McCones’ house.

4. The Viennain United Kingdom or in Austria?

5)Would you like to visit Eiffel Tower or the Acropolis?

6) Jacksons live in the Hill Street.

ТРЕТЬЕ УПРАЖНЕНИЕ:

1) He promises that he will buy the tickets for the concert tomorrow.

2)My parents always stay at this hotel.

3)I have never been to Berlin.

4)Look! They are getting off a train.

5)Last spring Frank took many wonderful photos of animals in Africa.

6)My aunt will take me to Mexico next summer.

ЧЕТВЕРТОЕ УПРАЖНЕНИЕ:

1)What means of transport do you prefer to travel on? – I prefer to travel by foot.

2)Will your daughter come to our village in autumn?

3)I enjoy spending my time with my family.

4)Kate got off the train and went along the road.

5)The bus arrived with Milan early in the morning.

6)Tom prefers playing with his friends.

7)My brother travels by business.

Подробнее - на -