Advantage-extra work\data to compare first data with.
Disadvantage-Your data might change over time.
The abiotic parts of an ecosystem are water, soil, air and dead organic matter. The correct options among all the options that are given in the question are the second, fourth, sixth and seventh options. They are basically non-living things that are present in the ecosystem. I hope it helps you.
Answer:
en español porfa no entiendo el ingles