Question

15 list the most common pioneer species and what they do to the environment?

Explanation:

Pioneer species are the first to colonize barren environments. Common ones include lichens (break down rock, form soil), mosses (retain moisture, add organic matter), and certain algae (provide nutrients, stabilize surfaces). These species modify the environment to make it suitable for subsequent, more complex organisms.

Answer:

• Lichens: Break down rock to form soil, start nutrient cycling.
• Mosses: Retain moisture, add organic matter to soil.
• Algae (e.g., cyanobacteria): Provide nutrients, stabilize surfaces in aquatic/terrestrial barren areas.