एक विशिष्ट जलीय तालाब पारिस्थितिकी तंत्र (pond ecosystem) में, खाद्य श्रृंखला सीधे किन प्राथमिक उत्पादकों से शुरू होती है?

Which specific group of organisms in a forest ecosystem is primarily responsible for the breakdown of dead organic matter to facilitate the recycling of nutrients back into the soil?

In the functional hierarchy of a forest ecosystem, which category is specifically defined as carnivores that feed on other carnivores?