Mount st. helens is a volcano that erupted with great force in 1980. which phrases best describe this eruption? check all that apply. quiet eruption gentle lava flows magma low in silica high-viscosity magma lava broken into fragments

As you sit in the library with your friend studying for your weekly quiz on the integumentary system, you come upon an article about the hazards of prolonged exposure to the sun's rays. your curious nature leads you to research the subject further. you're fascinated to learn that minimal exposure to the sun allows you skin to manufacture vitamin d, which is important to maintain homeostasis. you also read that although sunscreen can protect you from the ultraviolet (uv) rays of the sun, some medications can actually increase a person's sensitivity to the sunlight.