Question

the first organisms to appear in succession are species. when these organisms die, their decaying organic materials help form the soil in which plants in the stable, community will eventually grow. climax, pioneering pioneer; climax secondary, primary primary, secondary

Explanation:

• Pioneer species: These are the first organisms to colonize barren or disturbed areas. They are hardy and can grow in harsh conditions. As they die, their organic matter contributes to soil formation.
• Climax community: A stable, mature community that forms after a series of ecological successions. The soil formed by pioneer species provides a suitable environment for the plants in the climax community to grow.

Answer:

pioneer; climax