Question

the spheres are so closely related that a change in one of them often results in a change in one or more of the other spheres. using the event of the eruption of mount st. helena in 1980, why is this statement true?

Explanation:

The eruption of Mount St. Helena in 1980 affected multiple Earth - spheres. Ash and debris from the eruption entered the atmosphere (atmosphere sphere), changing air quality and weather patterns. Lava and pyroclastic flows altered the landscape and soil composition (lithosphere). Mudflows and changes in water chemistry occurred in nearby water bodies (hydrosphere). The destruction of habitats led to changes in plant and animal populations (biosphere). Thus, a change in the lithosphere (volcanic eruption) caused changes in other spheres.

Answer:

The eruption of Mount St. Helena affected the atmosphere, lithosphere, hydrosphere and biosphere, demonstrating that a change in one sphere can lead to changes in others.