Which of these can be used to identify metamorphic rocks? select all that apply.
color
texture
hardness
chemical composition

The correct answer would be texture and chemical composition.

Explanation:

The rock form by the transformation of pre-existing rocks by the process called metamorphism is called metamorphic rocks. The parent rock is subject to go through heat and pressure, leading profound chemical and physical change.

Metamorphic rocks can be identified and classified on the basis of texture (shape, grain size, and orientation) and mineral/chemical composition.

Thus, the correct answer would be texture and chemical composition.

i believe it would be the lungs.

the truman doctrine was an american foreign policy whose stated purpose was to counter soviet geopolitical expansion during the cold war. it was announced to congress by president harry s. truman on march 12, 1947, and further developed on july 12, 1948, when he pledged to contain threats to greece and turkey.