Question

A food chain starts with:
A. A nitrogen-fixing organism
B. Producer
C. Respiration
D. Decomposer

Answer 1

Hint: A food chain is a direct organization of connections in a food web beginning from maker organisms and finishing at hunter species, detritivores, or decomposer species. A food chain additionally shows how the organisms are connected by the food they eat. Each degree of a food chain speaks to an alternate trophic level.

Complete answer:
The food chain starts with a maker, which is eaten by a primary consumer. The primary consumer might be eaten by a secondary consumer, which thus might be devoured by a tertiary consumer.
For example, a food chain consisting of green plants as a producer. These are eaten by herbivores. So, option B is correct.
Nitrogen-fixing microbes, microorganisms fit for changing environmental nitrogen into fixed nitrogen (inorganic mixes usable by plants). So, option A is incorrect.
In physiology, respiration is the development of oxygen from the external climate to the cells inside tissues. So, option C is incorrect.
A decomposer is an organism that decays, or separates, natural material, for example, the remaining parts of dead organisms. Decomposers incorporate microscopic organisms and growths. So, option D is incorrect.
Hence, option B is correct.

Note: A food chain is a pathway that defines the exchange of energy starting with one creature then onto the next.
All in all, it is the sequential request of who eats whom in a natural network.
Food chains go connected with food networks. With each progress of energy, the food chain climbs levels. These levels are called trophic levels.
Trophic Levels: Primary Producers: Primary Consumer: for example, a grasshopper who eats the grass, Secondary Consumer: for example, the rodent who eats the grasshopper Tertiary Consumer:, for example, the snake who eats the