Answer:
main vent - this is the channel through which magma travels to reach the Earth's surface. secondary vent - some magma may escape through the side of the volcano, particularly if the main vent becomes blocked. crater - this is found at the top of the volcano, where the magma erupts from.
Answer: It would be the last option, the essential amino acid content. Determining the quality of a protein is determined by assessing its essential amino acid composition, digestibility and bioavailability of amino acids
