PLZ HELP!
How can you tell a sedimentary rock from another type?

Sedimentary rocks are made from grains so if it is made up from limstone,coal,shale, and sandstone then it is a Sedimentary rock.

Sedimentary rock is often found in layers, another way to tell if a rock sample is sedimentary is to see if it is made from grains. Some sedimentary rocks have limestone, sandstone, coal and shale in them.

Hope this helps

it cools slower in the earth meaning the crystals have more time to form than lava on the surface

organ system-an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.