AP BIOLOGY

Detailed explanation-1: -Secondary succession is more common and usually occurs faster than primary succession because the substrate is already present. Secondary succession occurs on a surface where an ecosystem has previously existed. This happens after some sort of disturbance.

Detailed explanation-2: -Secondary succession is faster than the primary succession as the growth media or the soil is already present which allows growth of the plants.

Detailed explanation-3: -Primary memory is volatile, while secondary memory is non-volatile. Primary memory is stored on semiconductor chips, while secondary memory is stored on external hardware devices. Primary memory is classified into cache and random access memory, while secondary memory has no such categories. Primary memory is faster.

Detailed explanation-4: -Secondary succession occurs faster than primary succession because it already has a physical substrate, such as soil that is capable of sustaining life.

Detailed explanation-5: -Primary succession is a slower process than secondary succession. Because, life has to start from a zero, whereas secondary starts at a place that had already supported life before.