Используйте правильную видо-временную форму глаголов и раскройте скобки. mr. strimple (be) a small animal practitioner. at present he (have) a clinic of his own. he (start) his clinic in 1998. and now he (have) two assistants. in a year he (plan) to have a special room to keep his patients in it. so, mr. strimple (be) the owner of the clinic and his assistants (be) his companions. they (take care) of animal population in their area. certainly, they (have) a lot of work to do. their work (require) much time and care.

Mr. Strimple is a small animal practitioner. At present he has a clinic of his own. He started his clinic in 1998. And now he has two assistants. In a year he is planning to have a special room to keep his patients in it. So, Mr. Strimple is the owner of the clinic and his assistants are his companions. They take care of animal population in their area. Certainly, they have a lot of work to do. Their work requires much time and care.

Динамика численности - это изменения в численности населения за определенный период. если брать период 19 -20 веков, то медленными темпами росло население  европы, с америки, австралии, а быстрыми темпами увеличивалось  население южной америки, африки (особенно), азии. чтобы рассчитать, нужны конкретные стартовые цифры. могу предложить формулу для расчета. весь мир - 7 млрд. - это 100%. численность населения с.америки -  528,7 мил. - х%. составляем пропорцию х = 528.7 млн. х 100/ 7 млрд. = доля нселения . америки. и так каждый регион.  объяснение: быстрыми темпами растет население в африке, ю.америке и азии. т.к. это беднейшие регионы мира, где население в основной своей массе занято в с\х на обработке почвы, а это ручной труд и особенно дешевая рабочая сила - дети. поэтому рождаемость у них большая. + в этих регионах религия запрещает/не рекомендует планирование или прерывание беременности.в европе. с. америке,австралии население растет медленно, т.к. там рождаемость маленькая (зачем иметь много детей. ведь их надо: кормить, учить, содержать). проще иметь семью без детей или, в крайнем случае, с одним ребенком. да и вообще, богатые люди предпочитают сразу получить образование,    сделать карьеру и только потом заводить ребенка а это уже к 30 . как следствие. организм уже либо не хочет, либо может, но только 1-2 детей

am going to tell you about my school. My school is new and modern and I like it very much. It has three floors. The classrooms are light and spacious. There are classrooms for different subjects, such as English, History, Physics, Mathematics, Chemistry, Geography, Biology Literature etc.

There is a computer class in our school. We study computer science here. The computer class has the most modern equipment and the Internet access.

We’ve also an assembly hall, which is situated on the second floor. Meetings, conferences, concerts and all the celebrations take place here. We prepare different performances for all holidays. We sing songs, recite poetry, dance, and participate in theatre performances.

There are many opportunities to go in for sports in our school. Our school has a gym, a sports ground, a football field, a swimming pool, and other sports facilities. There are many different sports groups: table tennis, swimming, athletics, football, volleyball, wrestling, and rhythmic gymnastics. Many pupils of our school attend these sports groups.

In our school we have also painting group, dance group, theatre group and rock group. All these groups are very popular and many pupils attend them.

The teachers in our school are very skilled. They try to give us all their knowledge and awake our interest to their subjects and to self study. Besides the school subjects, our teachers tell us about everything, about different problems of our world, such as ecology, nature protection, climat changes etc.

There is a good tradition in our school. Every year people who graduated our school come here to meet their teachers and classmates. These meetings take place every first Saturday of February.

I think that school years are very important for every person. It’s a period of becoming adult, achieving knowledges, and choosing your way in life. Often school friends remain your friends for all your life. So I’ll never forget my school, my teachers, and my classmates.