The milky way is a spiral galaxy.
Answer:
Sandstone does not react with Hydrochloric acid. The acid soaks into the rock because the rock is porous, filled with tiny holes. It is made up of tiny grains of sand cemented together by intense pressure.
When the heated part of the mantle rises through the cooler part , this is an example of Convection.
When people or animals play and interact with information, they get smarter.
