Which of the following eventually resulted in niagara falls love canal neighborhood been declared a federal emergency in 1978? a) oil drilling in the area had destroyed its ecosystem b). a neighborhood there had been built over a toxic dump c) a large amount of iron zinc and lead mine he had poison the water supply d) they had been an accident at a nearby nuclear power plant

The correct answer is option B, that is, a neighborhood there had been built over a toxic dump.  

In 1978, Love Canal, situated close to the Niagara Falls in the upstate New York, was a nice small working-class enclave with many houses and a school. It just occurred to have been sitting at the top of 21000 tons of toxic industrial waste, which had been buried underground in the 1940s and 50s by a local company.  

The families living in the chemicals were not familiar that they were being encountered with poisonous chemicals, nor were they aware of the chemical wastes being dumped into the soil, rivers, and air. The toxic wastes influenced the lives and damaged the environment.  

answer: - b cells

explanation: -

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.