A – Choose the correct option: Present Simple or Present Continuous. 1. Mark usually goes / is going home on foot.
2. Listen! Ted plays / is playing the piano.
3. My mother is a good cook. Everything she cooks / is cooking is excellent.
4. Now Stanley answers / is answering the phone.
5. They often watch / are watching TV in the evening.
6. Today Jessica goes / is going to school by car.
7. The dog sleeps / is sleeping under the table right now.
8. Water boils / is boiling at 100º Celsius.
B- Fill in the blanks with either Present Simple or Present Continuous form of the verbs in brackets.
1. Jason (not / listen) to the radio very often.
2. Where Sally usually (spend) her summer holidays?
3. Mr. Watson always (take) very good photos. Look! He (take) a photo of you right now.
4. It always (rain) at the weekend. But today the sun (shine).
5. Carol (phone) her grandmother every day. She (phone) her now.
6. Tom usually (play) football but now he (play) tennis.
7. The professor (speak) five languages. Right now he(speak) German.
C - Fill in the spaces with the correct form of the verb in Present Simple or Present Continuous tense.
1. Right now I (watch) a movie. I (watch) a lot of movies.
2. Rickie (be) my friend. We (like) to talk together. Right now we (talk) about school.
3. The police officer (wear) a badge and a gun to work every day.
4. Jaime usually (eat) cold cereal for breakfast, but now he (eat) oatmeal.
5. Jonas (sing) in the band on Saturdays, and Veda (play) the guitar with him.
6. My uncle (live) in Novosibirsk. I (live) in Moscow.
7. We (read) the newspaper every morning.
8. Listen! She ………………………………………………….(play) the piano.
9. My friend …………………………………………………… (play) the guitar every evening.
10. He usually ………………………………………..(get up) early in the morning.
He justified that for every single species in the economy of nature only the total number of places is available - ecological niches. And in one area there can be more individual animals, the more diverse their nature. He formulated a biogenetic law, according to which in the individual development of the organism the main stages of its evolution are actually reproduced. He built the first genealogical tree of the animal kingdom.
He proved that for each individual species in the economy of nature there is only a certain number of places — ecological niches. And in the same habitat may exist, the more animal-individuals, the more diverse their nature. He formulated the biogenetic law according to which the main stages of the organism evolution are actually reproduced in the individual development of the organism. He built the first genealogical tree of the animal Kingdom.