Microscope allowed us to find known parasites, micro living things.
Technology allowed us to inherit knowledge on different plants and animals
The barrier is cultural differences.
John, growing up in America learned that eye contact is a way of respect and to show you are paying attention.
Where Cho, growing up in Asia, many Asian counties don't have this "custom" to call it that.
A tornado, or twister.
Hope this helps ya :P
B ecosystem. They include abiotic factors and biotic factors.
