Mn ơi giúp em với mai em thi r
K
Khách
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Những câu hỏi liên quan
29 tháng 3 2022
refer
ếch hô hấp qua da và phổi
Những trận mưa rào thường vào cuối xuân sau đầu mùa hạ vì đây là thời điểm sinh sản của chúng, vì thế các con đực sẽ cất tiếng kêu ộp ộp liên tục và thậm chí là rất to để gọi bạn tình. Đấy chính là tín hiệu để ếch cái nghe thấy tiếng gọi của "người yêu" sẽ tìm đến để giao phối.tra gg mà ko chắc ;-;
LN
0
KY
13 tháng 5 2022
Tham khảo :
Environmental pollution has become a controversial issue that puts severe pressure on our rhythm of life. The pollution on Earth has reached such an alarming level that immediate involvement from governments and individuals collaboration now are of great importance. First and foremost, industrial activities are considered to be the main cause for air pollution. Along with the global industrialization, the burning of fossil fuels, motor vehicles and factories are contaminating the air by their emission of harmful fumes. In the second place, pervasive deforestation for land use, overuse of fertilizers and the dumping pollutants such as plastic or non- biodegradable packing in the ground has affected the ecosystem and led to soil pollution. This puts bad long- term effects on vegetation and soil fertility. Serious attempt to relieve the effects of pollution and preserve the environment need to be made as soon as possible. Governments can monitor the exhaust purification process of large factories so that they can prevent dangerous exhaust from the environment. Moreover, stricter regulations and laws against forests exploitation can help preserve pristine environment. Individuals should be responsible and raise awareness for the protection of environment. In conclusion, pollution has increasingly become a threat to the globe, directly affects our life and for the sake of environment and all citizens around the world, we should work hand in hand to protect our friendly house- the earth.
13 tháng 5 2022
em có thể tham khảo trên mạng nhé , và đây là bài văn tham khỏa mà chị thấy hay nhé .
mong mn giúp mai em thi r
V
violet
Giáo viên
27 tháng 2 2021
Chào em, em tham khảo nhé!
1: The paparazzi had followed Princess Diana.
=> Princess Diana had been followed by the paparazzi.
2: Celebrities often accuse the paparazzi of putting lives in danger.
=> The paparazzi is often accused by celebrities of putting lives in danger.
3: The police arrested the photographer.
=>The photographer was arrested by the police.
4: The paparazzi have followed him everywhere.
=> He has been followed by the paparazzi everywhere.
5: Michael Douglas did not give the guests the location of the wedding.
=>The guests were not given the location of the wedding by Michael Douglas.
6: The paparazzi do not pay celebrities.
=> Celebrities are not paid by the paparazzi.
Chúc em học tốt và có những trải nghiệm tuyệt vời tại hoc24.vn!
27 tháng 2 2021
III> Rewrite using the correct passive form.
1: The paparazzi had followed Princess Diana. => Princess Diana had been followed by the paparazzi
2: Celebrities often accuse the paparazzi of putting lives in danger.
=> The paparazzi are often accused of putting lives in danger.
3: The police arrested the photographer.
=>The photographer was arrested by the police.
4: The paparazzi have followed him everywhere.
=> He has been followed everywhere by the paparazzi.
5: Michael Douglas did not give the guests the location of the wedding.
=>The guests weren't given the location of the wedding by Michael Douglas.
6: The paparazzi do not pay celebrities.
=> Celebrities aren't paid by the paparazzi.
3N
1
YN
2 tháng 3 2022
1 The distance from my home to school is about 3 km
2 My mum used to live in a small village when she was small
3 Despite being a millionaire , he lives in a small flat
4 when does the festive take place ?
5 It is about two kilometres from my home to school
6 he didn't use to ride his bike to school
7 Despite having a test tomrrow , they are still watching TV now
a/ Gồm có nguyên tố : C và H
b/ mC= (8,8 . 12 ) / 44 = 2,4 g
mH = ( 1,8.2) / 18 = 0,2 (g)
nC : nH = (2,4:12) : (0,2:1) = 1 : 1
Công thức đơn giản nhất : CH
CTPT : (CH)n
nếu n = 1 thì MX = 13g/mol (loại)
nếu n = 2 thì MX = 26 g/mol (nhận)
Vậy CTPT của X là C2H2