Question

1. a landslide causes part of a mountainside to fall away, leaving bare rock. in the years immediately following the landslide, the area will experience

primary succession.
secondary succession.
tertiary succession.
a climax community.

Explanation:

Primary succession occurs in an area where there is no soil or organic matter initially, like bare rock after a landslide. Secondary succession happens in an area that had a previous ecosystem but was disturbed (e.g., a forest fire in an area with soil). Tertiary succession is not a standard ecological term. A climax community is the final, stable stage of succession. Since the area has bare rock (no soil), it's primary succession.

Answer:

primary succession.