Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
What are the critical factors required for the maintenace of natural ecosystem functions?
What I've come up with so far isn't really cutting it so I need a little help on this for a college assignment. Please cite sources if you have an answer for me :) If if comes from personal knowledge add your name and I will use that as a reference if I use part of your answer.
1 Answer
- formerly_bobLv 71 decade agoFavorite Answer
Here's a minimalist way to look at it, and I'm not sure this is what you prof is looking for - this is just my way of thinking:
A hypothetical autotrophic system would require:
* organisms that convert energy to biomass (plants)
* water
* nutrients
* suitable atmosphere
* suitable temperatures
A minimal heterotropic system would need the above plus decomposers
A complete ecosystem adds more trophic levels to the previous two components:
*herbivores
*carnivores - primary & secondary
*omnivores
