A galaxy is a group of stars, interstellar gas, dust, etc.
There are different types of galaxies. They are all categorized by their shape:
Spiral: a spiral galaxy has a disc in the centre and curved arms that come out of it.
Irregular: it does not have a specific shape. It is just a mass of things.
Elliptical: an elliptical galaxy looks basically like a disc in the universe.
I hope it helps. I tried to explain it as easy and as simple as possible!
The cell can grow large but not the organisms. Once the cell is growing the organisms grow smaller. I think hope it correct
The outer part of the earth
Answer:
The kidneys help maintain the acid–base balance by excreting hydrogen ions into the urine and reabsorbing bicarbonate from the urine
