The thickness nothing can escape
Explanation:
This question requires more information for a complete answer. The first trophic level of a food chain or web is reserved for plants and other photosynthetic organisms that captures solar energy from the sun and converts it to chemical energy. The second trophic level is reserved for herbivores or primary consumers. The third trophic level or secondary consumers are carnivores or predators.
Decomposers are not usually drawn or represented in a food web or chain but they do play a vital role. Decomposers break down dead and decaying organisms and return these unused nutrients to the soil for producers to use.
The control group is the one that won't receive fertilizer.
The name is chemoreceptors; this is because they both respond to chemical in solution. A receptor is a protein molecule that receives chemical signals from outside a cell. When such chemical signals bind to a receptor, they cause some cellular/tissue response; e.g. a change in the electrical activity of a cell. Chemoreceptors are cells specialized to detect chemical substances and relay that information centrally in the nervous system. Chemoreceptors may monitor external stimuli, as in taste and olfaction, or internal stimuli, such as the concentrations of oxygen and carbon dioxide in the blood.
