Dashboard - All Updates
View groups and posts below.
This post is from a suggested group
Definition
The immune system is the body’s defense system that protects us from harmful germs like bacteria and viruses.
Main Details
It includes organs, cells, and proteins that work together
White blood cells fight infections
It can recognize harmful substances
This post is from a suggested group
Pollution is the introduction of harmful substances or contaminants into the environment that cause adverse effects on living organisms and the natural world.
This post is from a suggested group
💥 The Beginning — Big Bang
1.
The universe started from a tiny, super hot point 🤯
Then it expanded FAST 💨
This happened about 13.8 billion years ago
🌑 First Darkness
This post is from a suggested group
Your internal thermostat is located in a part of the brain called the hypothalamus. When your immune system detects an intruder (like a virus or bacteria), it releases chemicals called pyrogens into the bloodstream.
Chills and Shivering: Your muscles contract to generate heat to reach the new, higher set-point.
Vasoconstriction: Your blood vessels narrow to keep heat away from your skin, which is why you might feel cold or look pale even as your internal temperature rises.
This post is from a suggested group
Definition
Nutrition is the process by which the body takes in food and uses it for energy, growth, repair, and maintaining health.
Main Ideas
The body needs different nutrients to function properly.
Food is broken down during digestion into simple forms.
Nutrients are absorbed and carried through the blood.
This post is from a suggested group
Economic Activities
Done with the aim of earning money
Involves production, distribution, or exchange of goods/services
Helps in livelihood and economic growth
Examples: farming, teaching (job), running a shop, working in an office, factory work
Result: Income (wages, salary, profit)
This post is from a suggested group
The idea that the universe is expanding is one of the most important discoveries in modern Cosmology. Here’s a clear, student-friendly research-style explanation:
🔭 1. Discovery of Expansion
In 1929, Edwin Hubble discovered that galaxies are moving away from us. By studying light from distant galaxies, he noticed something called redshift—the light stretches toward the red end of the spectrum, showing the galaxies are receding.
🌌 2. What is Expanding?
It’s not just galaxies moving in space—the space itself is expanding. Imagine dots on a balloon: as you blow it up, all dots move away from each other. This idea comes from General Relativity, developed by Albert Einstein.
This post is from a suggested group
Whales are large marine mammals that live in oceans, breathe air through blowholes, and give birth to live young.
Live in oceans
Breathe air using a blowhole
Are warm-blooded mammals
This post is from a suggested group
1. Private Entrepreneur
A person who starts and manages a business alone
No government involvement
Takes all the risk
Enjoys all the profit
2. Public Entrepreneur
