Which type or types of rock can become metamorphic rock?

a.
igneous, sedimentary, and metamorphic rocks

b.
only sedimentary rocks

c.
metamorphic and igneous rocks

d.
igneous and sedimentary rocks

Explain the importance of producers, primary consumers, secondary consumers and decomposers in an ecosystem.

Which mechanism of transport takes place when solute particles move from a region of high concentration to a region of low concentration? active diffusion isotonic osmosis

Ascientist is conducting an investigation that involves water, silver, carbon dioxide, and oxygen gas which group of statements best describes all of the materials he is using in the investigation?