"On the mode of communication of cholera" was written by Dr. John Snow in order to spread awareness about the disease and the new ideas giving scientific proof along with them. Through his text, he aimed at persuading the citizens and the officials to become more aware regarding the sanitation of their surroundings as Cholera is transmitted via the dirty surroundings. In his text he discussed the causes of spread, instances and scientific evidence of Cholera of its communication among different populations.
Hence, the correct answer is 'Option A and B'.
Answer:
all member are same species
Answer:
The form of cell to cell signalling that is been used is ENDOCRINE.
Explanation:
There are four ways by which cell signalling occur in the body, these are: endocrine, paracrine, autocrine and direct signalling.
Endocrine signalling is the biochemical process by which hormone secreting glands release hormones into the blood streams and that hormone has effects on target organs that are located far away from it. Endocrine hormones are usually stable and their effects usually last for long time.
Answer:
Different ecosystems have different levels of consumers, all end with one top consumer. Most energy is stored in plants and oxygen, and as the consumers eat these plants they take up a small amount of energy. This energy in the herbivores and omnivores is then consumed by carnivores.
The plant with no fertilizer.
