To all science will mark i need urgent !
1.) what is the composition of gneiss
2.) what is the parent rock of marble and what is its main mineral/ composition?
3.) what is the parent rock of slate and what is its main mineral/ composition?
4.) what is the parent rock of quartzite and what is its main mineral/ composition?

1)The lighter bands contain mostly quartz and feldspar, the darker often contain biotite, hornblende, garnet or graphite.

2)Marble is a metamorphic rock form composed of coarse crystals from parent limestone or dolostone rocks. Pure marble is white and composed of the mineral calcite.

3)Mudstone is the parent rock of slate. Slate is a product of regional metamorphism. Mudstone is made up of silt- and clay-size particles. Typically, the "clay-size" particles are made of clay minerals (illite, smectite, kaolinite, and chlorite).

4)Quartzite is composed of sandstone that has been metamorphosed. Quartzite is much harder than the parent rock, sandstone. It forms from sandstone that has come into contact with deeply buried magmas.

I hope this helps good luck!

it is called an accent mark

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation: