Mineral is a naturally occurring, inorganic solid that has a crystal structure & a definite chemical composition.
The red algae was the plant group that includes the Ancestors of plants.
To prevent blood flowing back after each heartbeat. They ensure that the blood flows only in one direction (back to the heart).
Answer:
Because humans couldn’t see outside of earth. Gailieo Galilei used his telescope to prove this was wrong ultimately.
More:
it was debunked till the 16th century. Scientists observations and knowledge had advanced too far for the geocentric model to explain them.
I looked like the sun was moving from earth but it really earth thats moving around the sun. The parallax is effect helped explain this.
Oxygen,carbon,nitrogen and hydrogen hope this helps