Answer: Receptors.
Explanation: Receptors. Receptors are groups of specialised cells. They detect a change in the environment stimulus. In the nervous system this leads to an electrical impulse being made in response to the stimulus.
Because they don't have to be fast. plus their herbivores so they don't have to chase their food.
The answer is most likely D, since both eye colors are dominant.
Histone proteins form the chromosomes when the DNA is inserted into the active sites of the proteins.
Answer:C. Bacteria in soil and in root nodules converted free nitrogen into nitrogen compounds
Explanation:the conversion of atmospheric nitrogen into nitrates and ammonia ,which the plant can use,is called nitrogen fixation.
Bacteria which are able tofix nitrogen includes azotobacter, clostridium sp.Rhizobium can also fix nitrogen through a mutualistic relationship with the roots of legumes.
When plants die, the plant parts can be broken down into amino acid which can be oxidized to ammonia.
