Yếu tố chính thứ ba trong trồng trọt là:

Trong hệ tọa độ \(Oxy\), cho \(\overrightarrow u = \frac{1}{2}\overrightarrow i - 5\overrightarrow j \). Khi đó \(\overrightarrow u = \left( {a;b} \right)\). Tính \(a + b\).

Mang có ở những loài động vật nào dưới đây?

Cho hàm số $y=f(x )$có đồ thị như hình vẽ:

Tiệm cận xiên của đồ thị hàm số đã cho là đường thẳng

Read the following passage about the impact of social media on mental health and mark the letter A, B, C, or D on your answer sheet to indicate the best answer to each of the following questions

[I] In recent years, social media platforms have become a central part of daily life, offering users countless ways to connect, share, and communicate. [II] While these platforms offer many advantages, experts have noted rising concerns about their effects on mental health, particularly among young people (Smith & Anderson, 2018). [III] Studies reveal that excessive social media use can contribute to feelings of anxiety, depression, and loneliness, despite its intention to promote connection and social interaction (Twenge & Campbell, 2019). [IV]

A primary reason for these mental health concerns is the tendency for social media users to compare themselves to others. Platforms like Instagram and Facebook often highlight idealized lifestyles, leading users to feel inadequate about their own lives. Additionally, the constant notifications and messages contribute to a "fear of missing out," or FOMO, which keeps individuals in a cycle of checking their phones, often reducing the quality of sleep and overall well-being.

There is also a growing body of research suggesting a link between social media use and decreased attention spans. When users frequently switch between apps and notifications, their ability to focus for extended periods may diminish (Rosen, 2019). This shift in attention can interfere with productivity, especially in academic and professional settings, where sustained focus is essential.

Addressing these challenges requires a multi-faceted approach. Some mental health professionals suggest limiting screen time and setting boundaries, such as "device-free" hours before bedtime. Others recommend engaging in offline activities, like reading or exercising, to reduce dependence on social media and build healthier habits. According to psychologists, such strategies can bu mental resilience and allow for more meaningful, balanced relationships (Robinson & Smith, 2020).

The word "their" in paragraph 3 refers to ____.

Cho phản ứng: SO₂ + Br₂ + H₂O → HBr + H₂SO₄. Trong phản ứng trên, vai trò của Br₂

Độ ẩm phù hợp để bảo quản các loại quả khoảng

Mark the letter A, B, C or D on your answer sheet to indicate the best arrangement of utterances or sentences to make a meaningful exchange or text in each of the following questions from 13 to 17.

a. Even though they sometimes face big problems since not everyone has good internet and some places don't have computers, code poets never give up on their mission.

b. Although some code poets build websites to help people find food and clean water, others develop programs that help people learn to read and write.

c. Code poets, who are special computer programmers, use their skills to help people around the world because they want to make life better for everyone.

d. Today, code poets continue to work hard because they believe technology can help make the world better, and their work demonstrates that computers can bring hope to many people.

e. While these digital helpers make apps for poor villages that help doctors give medicine to sick people, they also create applications that assist teachers in educating children in remote locations.

Tìm GTNN của \(F(x;y) = 5x - 3y\), với đk \(\left\{ \begin{array}{*{35}{l}} x\ge 0 \\ 0\le y\le 5 \\ x+y-2\ge 0 \\ 3x-y\le 6 \\ \end{array} \right.\)?

Nội dung nào dưới đây là hoạt động tiêu dùng?

Các nước có thu nhập ở mức thấp hiện nay hầu hết đều ở khu vực nào?

Để nhận biết đường glucose có thể dùng loại thuốc thử nào sau đây?

Xét phương trình \(\log(x+\sqrt{x^2+1}) = \frac{3}{a}(\frac{x}{2})^b\) trên khoảng \((-2;2)\), với \(a\) và \(b\) là hai số nguyên dương đều bé hơn 20. Những phương án nào dưới đây đúng?