Which changes will MOST likely have a negative effect on an ecosystem? A. creating a nature sanctuary
B. planting a tree
C. adding a freshwater source.
D. building a road

building roads

Explanation:

roads occupy land resources and form barriers to animals. They can also cause adverse impacts on natural water resources and discharge areas. The three most damaging effects of road construction and management are noise, dust and vibrations etc.

volcanoes (an event in the geosphere) release a large amount of particulate matter into the atmosphere. these particles serve as nuclei for the formation of water droplets (hydrosphere). rainfall (hydrosphere) often increases following an eruption, stimulating plant growth (biosphere).