Topic 1

Living a healthy lifestyle has many advantages for students. First, it helps us stay strong and have more energy for studying and daily activities. Eating balanced meals and exercising regularly improve our immune system and prevent illness. In addition, healthy habits reduce stress and help us sleep better. When we feel good physically and mentally, we can focus better, feel happier, and enjoy life more.

1. The Muong earn their living by farming and raising animals.

2. They are in the habit of exercising after work.

1. The Muong earn their living by farming and raising animals.

2. They are in the habit of exercising after work.

vì :
-Hạt nhân nguyên tử nằm ở trung tâm, có kích thước rất nhỏ (~10⁻¹⁵ m) nhưng chứa gần như toàn bộ khối lượng của nguyên tử.

-Electron chuyển động xung quanh hạt nhân gần như không đáng kể.