The Ozone Layer: Protecting Ourselves from the Sun's Fury The ozone layer, a fragile shield in the Earth's stratosphere, protects us from the harmful ultraviolet (UV) radiation emitted by the sun. This radiation can cause sunburn, skin cancer, cataracts, and damage ecosystems. Understanding the threats to the ozone layer and international efforts to mitigate them is crucial for safeguarding our planet.
Cell Division: Mitosis vs. Meiosis Imagine a baker making delicious rolls. The baker starts with a single ball of dough and, through a series of steps, creates two identical rolls. This is similar to how cells reproduce! Cells, the building blocks of all living things, need to make copies of themselves to grow, repair tissues, and replace worn-out cells. This amazing process of cell division occurs in two main ways: mitosis and meiosis.