NT
1
K
Khách
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8 tháng 2 2021
Marine pollution is a growing problem in today’s world. Our ocean is being flooded with two main types of pollution: chemicals and trash.
Chemical contamination, or nutrient pollution, is concerning for health, environmental, and economic reasons. This type of pollution occurs when human activities, notably the use of fertilizer on farms, lead to the runoff of chemicals into waterways that ultimately flow into the ocean. The increased concentration of chemicals, such as nitrogen and phosphorus, in the coastal ocean promotes the growth of algal blooms, which can be toxic to wildlife and harmful to humans. The negative effects on health and the environment caused by algal blooms hurt local fishing and tourism industries.
Marine trash encompasses all manufactured products—most of the plastic—that end up in the ocean. Littering, storm winds, and poor waste management all contribute to the accumulation of this debris, 80 percent of which comes from sources on land. Common types of marine debris include various plastic items like shopping bags and beverage bottles, along with cigarette butts, bottle caps, food wrappers, and fishing gear. Plastic waste is particularly problematic as a pollutant because it is so long-lasting. Plastic items can take hundreds of years to decompose.
This trash poses dangers to both humans and animals. Fish become tangled and injured in the debris, and some animals mistake items like plastic bags for food and eat them. Small organisms feed on tiny bits of broken-down plastic, called microplastic, and absorb the chemicals from the plastic into their tissues. Microplastics are less than five millimeters (0.2 inches) in diameter and have been detected in a range of marine species, including plankton and whales. When small organisms that consume microplastics are eaten by larger animals, the toxic chemicals then become part of their tissues. In this way, the microplastic pollution migrates up the food chain, eventually becoming part of the food that humans eat.
Solutions for marine pollution include prevention and cleanup. Disposable and single-use plastic is abundantly used in today’s society, from shopping bags to shipping packaging to plastic bottles. Changing society’s approach to plastic use will be a long and economically challenging process. Cleanup, in contrast, may be impossible for some items.
Nonetheless, many countries are taking action. According to a 2018 report from the United Nations, more than sixty countries have enacted regulations to limit or ban the use of disposable plastic items.
CHÚC BẠN HỌC TỐT!!
B
27 tháng 5 2020
1, you have to study hard, or you will fail the next exam.
If...you don't study hard, you will fail the next exam
2, please come before 8 am, otherwise, you can’t meet her.
If...you come before 8 a.m , you can't meet her
3, tell her the truth when you see her tomorrow. If.. you see her tomorrow, tell her the truth
4, you press this button to stop the machine.
-> If you want to stop the machine, you can press this button
5, i hope it is sunny tomorrow because i can go to the beach then.
-> If it is sunny tomorrow, i can go to the beach
6, make me some coffee and i will give you one of my biscuits
.-> If you make me some coffee , i'll give you one of my biscuits
7, in the snowy weather, we don’t go to school.
-> If it is in the snowy weather, we won't go to school
8, i only come if they invite me.
If... they don't invite me, i won't come
9, work hard or you can’t pass the exam.
If... you work hard, you can pass the exam
10, practise speaking every day or you can’t improve your English.
If....you don't practise speaking everyday, you can't improve your English
K
27 tháng 5 2020
1, you have to study hard, or you will fail the next exam. If you don't study hard, you will fail the next exam. / If you study hard, you won't fail the next exam.
2, please come before 8 am, otherwise, you can’t meet her. If you don't come before 8 am, you can't meet her. / If you come before 8 am, you can meet her.
3, tell her the truth when you see her tomorrow. If you see her tomorrow, tell her the truth
4, you press this button to stop the machine.-> If you press this button, you will stop the machine
5, i hope it is sunny tomorrow because i can go to the beach then.-> If it is sunny tomorrow, I can go to the beach then
6, make me some coffee and i will give you one of my biscuits.-> If you make me some coffee, I will give you one of my biscuits
7, in the snowy weather, we don’t go to school.-> If the weather is snowy, we won't go to school
8, i only come if they invite me. If they invite me, I will come
9, work hard or you can’t pass the exam. If you don't work hard, you can't pass the exam. / If you work hard, you can pass the exam.
10, practise speaking every day or you can’t improve your English. If you don't practise speaking every day, you can’t improve your English. / If you practise speaking every day, you can improve your English.
Có những câu có 2 cách làm, b chọn cách nào cũng đúng nhé.
22 tháng 12 2021
6. carefully
7. information
8. beauty
9. permission
10. convenient
PA
18 tháng 3 2020
Complete the sentences with the correct form of the verbs in brackets:
1. The accident was your fault. If you had driven more carefully, it.........wouldn't have happened..........(not happen)
2. If you.......had told.....(tell) me you needed money, I could have lent you some.
3. If my grandfather....was.......(be) still alive, he would be hundred today.
4. I...would offer....(offer) you to give you a lift if I had my car here.
Ko bik đúng ko nữa mới học lớp 7 thôi :v
11 tháng 9 2023
A: Can you tell me about the inventor of the car?
(Bạn có thể cho tôi biết về người phát minh ra ô tô không?)
B: Yes, Karl Benz, who was a designer, invented the car in.
(Vâng, Karl Benz, một nhà thiết kế, đã phát minh ra xe hơi.)
MC
0
5 tháng 12 2018
Rewrite the following sentences using conditional sentence
E.g: Drive carefully or you will cause accidents
-> If you don't drive carefully, you will cause accidents
1. Be quiet or you will wake the baby up
-> If ___you are not quite, you will wake the baby up___
2. Unless she listens carefully, she will make some mistakes
-> If ___ she doesn't listen carefully, she will make some mistakes__
3. If anybody should phone me, please tell them I'm busy
-> Should ___somebody phone me, please tell them I'm busy__
4. If you should find any difficulty in using that laptop, please call me
-> Should ___you find any difficulty in using that laptop, please call me____
5. Make me some coffee and I'll give you one of my biscuis
-> If you __make me some coffee, I'll give you one of my biscuits___
In the below example, we've featured an astronaut on earth and on the moon. The Moon's gravity is much less than the Earth's gravity - approximately one sixth. So, a 100 kg astronaut weighs 980N on Earth. On the Moon, the astronaut would weigh only 162.2N. However, the astronaut's mass is 100kg where-ever they are.
Weight on Earth: 100kg x 9.8m/s2 = 980N.
Weight on Moon: 100kg x 1.622 m/s2 = 162.2N.