Some plant are made from arsenic and lead, which are very poisonous to animals and fish.
A. regulators
B. fertilizer
Answers
Explanation:
Arsenic has long held a position of ambiguity with regard to its activity in biologic systems. In spite of the recognized toxicity of many forms of arsenic, various arsenicals have been used in the practice of medicine. A specific nutritional role for inorganic arsenic has been uncovered only recently, but animal feeds have been supplemented with “growth-promoting” organic arsenical additives for many years. Another curious feature of arsenic biochemistry is the ability of the element partially to counteract the ill effects of yet another toxic substance, selenium. This chapter summarizes what is known about the detrimental and beneficial effects of arsenic on living systems other than man and discusses in as much detail as appropriate the molecular mechanisms responsible for these effects. Previous reviews have dealt with the toxicology, 109 general biochemistry, 814 , 815 and pharmacology 783 of arsenic.
Answer:
fertilizer
Explanation:
A fertilizer is any material of natural or synthetic origin that is applied to soils or to plant tissues to supply one or more plant nutrients essential to the growth of plants. Many sources of fertilizer exist, both natural and industrially produced.