Hmm.. This is confusing I know, but i believe the last time i saw a question like this it is the lack of a maintaining homeostasis. A fire can not do this on its own accord.
Answer:
The correct answer is -A. producer level.
Explanation:
the first trophic level is the level of photosynthetic organisms they produce their food and energy on their own from the ultimate source of energy, the Sun. This is why they are called producers.
Producers have the most energy in any ecological ecosystem as all other organisms get food from these directly or indirectly. Only 10 percent of total energy is transferred from one trophic level from producers to the next tropic level through consumers of different trophic levels.
A group of tissues working together is an organ.
ANSWER:
A. an organ