Question

a student observes that when heavy rain falls on steep slopes, landslides sometimes occur. which explanation best describes how different spheres interact in this event? ○ energy from the sun causes ice to melt in the cryosphere ○ water from the hydrosphere loosens soil in the geosphere, moving it downhill and affecting plant life in the biosphere. ○ winds from the atmosphere cool the land and cause flooding. ○ volcanic activity in the geosphere evaporates water into the atmosphere.

Explanation:

The question is about the interaction of different Earth spheres (hydrosphere, geosphere, biosphere) during a landslide caused by heavy rain. Let's analyze each option:

• The first option mentions the cryosphere (ice - related) and the Sun's energy, which is not relevant to the landslide caused by heavy rain.
• The second option: Heavy rain (hydrosphere) loosens soil (geosphere) and affects plant life (biosphere), which is a correct description of the interaction in a landslide event.
• The third option talks about winds cooling the land and causing flooding, which is not about landslides.
• The fourth option mentions volcanic activity, which is not related to the landslide caused by heavy rain.

Answer:

Water from the hydrosphere loosens soil in the geosphere, moving it downhill and affecting plant life in the biosphere.