Các phát biểu dưới đây là đúng hay sai khi nói về vai trò của sinh vật tự dưỡng?

Vai trò của hoạt động trao đổi với người sản xuất và người tiêu dùng là gì?

Cách ghi kết quả đo chính xác là

Nguyên tố Fe là thành phần cấu tạo của bào quan hay hợp chất nào sau đây?

Năng lượng liên kết riêng của các hạt nhân \(^{14}_6C\), \(^9_4Be\), \(^{56}_{26}Fe\), \(^{108}_{47}Ag\) lần lượt là 7,7 MeV, 6,3 MeV, 8,8 MeV, 8,6 MeV. Hạt nhân nào trong số những hạt nhân trên có mức độ bền vững kém nhất?

Cơ cấu dân số theo giới là tương quan giữa yếu tố nào?

Nhiệt độ ảnh hưởng đến mấy quá trình của cây trồng?

Xác định: Mạch điều khiển tín hiệu có mấy công dụng chính?

Read the following passage about the Exploring The Universe and mark the letter A, B, C or D on your answer sheet to indicate the best answer to each of the following questions from 31 to 40.

Science is a vast and fascinating field that seeks to understand the natural world and the universe beyond[I]. It encompasses various disciplines, including physics, chemistry, biology, and astronomy[II]. Each of these areas contributes to our understanding of complex phenomena, [III]. For instance, scientific research has led to significant breakthroughs in medicine, renewable energy, and environmental conservation[IV]. In this essay, we will explore the impact of science on our lives, particularly focusing on space exploration.

One of the most intriguing aspects of science is space exploration. Humans have always looked to the stars, wondering what lies beyond our planet. The launch of satellites and manned missions has allowed us to gather valuable information about the cosmos. For example, NASA's Mars Rover has provided insight into the potential for life on other planets. Through meticulous research and data collection, scientists can analyze soil samples and atmospheric conditions, paving the way for future explorations.

Space exploration also raises critical questions about our existence and the future of humanity. As we continue to advance technologically, the prospect of colonizing other planets becomes more plausible. This endeavor could serve as a solution to the challenges we face on Earth, such as overpopulation and resource depletion. However, ethical considerations must guide these efforts. We must ensure that we do not repeat the mistakes of history, such as the exploitation of natural resources and indigenous populations.

Moreover, scientific advancements have enabled us to develop technologies that enhance our understanding of the universe. Telescopes and space probes allow us to observe distant galaxies, study black holes, and uncover the mysteries of dark matter. Each discovery leads to new questions, further fueling our curiosity and drive for knowledge. The concept of the multiverse, for instance, challenges our understanding of reality and pushes the boundaries of scientific thought.

In addition to exploring the universe, science plays a crucial role in addressing pressing issues on Earth. Climate change, for example, is a significant concern that scientists are actively investigating. Through climate models and data analysis, researchers can predict future trends and propose solutions to mitigate the effects of global warming. Public awareness and education are essential in fostering a collective response to environmental challenges.

As we reflect on the wonders of science, it is clear that its contributions extend far beyond mere knowledge acquisition. Science empowers us to make informed decisions about our health, environment, and future. By fostering a culture of curiosity and critical thinking, we can inspire future generations to continue exploring the unknown.

Which of the following is NOT mentioned in the essay?

Cho hàm số \(f(x)=-x^{3}+m x^{2}-\left(m^{2}+m+1\right) x\). Với \(m\) là tham số thực.

Với \(m=2\) thì giá trị nhỏ nhất của hàm số \(y=f(x)\) trên đoạn \([0; 4]\) bằng:

Bình thường, trypsin được sản xuất bởi cơ quan nào?

Em hãy cho biết cuộn cảm ngăn cản dòng điện nào?

Nguyên nhân chính phía Đông của Liên Bang Nga không thuận lợi cho phát triển nông nghiệp?

Một trong những vai trò của du lịch đối với việc bảo tồn di tích lịch sử và di sản văn hóa là

Khối lượng nguyên tử magnesium là 39,8271.10^-27 kg. Khối lượng của magnesium theo amu là

Trong quá trình bảo quản nông sản cần phải làm cho hô hấp

Một biểu hiện ở Tràng được Kim Lân nhắc đến nhiều lần khi anh mới "nhặt" được vợ đối lập với biểu hiện tâm trạng thường có của người đang ở trong cảnh đói khát bi thảm là:

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions:

            For many people who live in cities, parks are an important part of the landscape. They provide a place for people to relax and play sports, as well as a refuge from the often harsh environment of a city. What people often overlook is that parks also provide considerable environmental benefits.

            One benefit of parks is that plants absorb carbon dioxide - a key pollutant - and emit oxygen, which humans need to breathe. According to one study, an acre of trees can absorb the same amount of carbon dioxide that a typical car emits in 11,000 miles of driving. Parks also make cities cooler. Scientists have long noted what is called the Urban Heat Island Effect: building materials such as metal, concrete, and asphalt absorb much more of the sun’s heat and release it much more quickly than organic surfaces like trees and grass. Because city landscapes contain so much of these building materials, cities are usually warmer than surrounding rural areas. Parks and other green spaces help to mitigate the Urban Heat Island Effect.

            Unfortunately, many cities cannot easily create more parks because most land is already being used for buildings, roads, parking lots, and other essential parts of the urban environment. However, cities could benefit from many of the positive effects of parks by encouraging citizens to create another type of green space: rooftop gardens. While most people would not think of starting a garden on their roof, human beings have been planting gardens on rooftops for thousands of years. Some rooftop gardens are very complex and require complicated engineering, but others are simple container gardens that anyone can create with the investment of a few hundred dollars and a few hours of work.

            Rooftop gardens provide many of the same benefits as other urban park and garden spaces, but without taking up the much-needed land. Like parks, rooftop gardens help to replace carbon dioxide in the air with nourishing oxygen. They also help to lessen the Urban Heat Island Effect, which can save people money.

            In the summer, rooftop gardens prevent buildings from absorbing heat from the sun, which can significantly reduce cooling bills. In the winter, gardens help hold in the heat that materials like brick and concrete radiate so quickly, leading to savings on heating bills. Rooftop vegetable and herb gardens can also provide fresh food for city dwellers, saving them money and making their diets healthier. Rooftop gardens are not only something everyone can enjoy, they are also a smart environmental investment.

Question 40: According to the author, one advantage that rooftop gardens have over parks is that they______.