Answer:
A. The magma cooled too quickly too quickly for gas to escape.
Explanation:
Scoria is a type of extrusive igneous rock. Some of their characteristics include that they cool quickly with no time for large crystals to form, some of them have large vesicles which are holes caused by gas bubbles when the lava was molten.
C........................................................................................................
A seals flippers has finger bones when a birds wing is just a bone connected to other joints.
Which is one of the six fundamental elements that are found in living organisms?
Nervous system and neuropipet compounds