Studies have been conducted on synthetic products, including ddt and estrogen. the use of these synthetic products has been discontinued due to increased risk of cancer and other health concerns. genetic engineering has increasingly been used in cattle, crops, and pharmaceuticals. the long-term effects of genetic engineering have not been studied at this time. what risks, if any, are there to using genetic engineering in food and medicine?

Which would prevent a plant from growing

Charles darwin published his theory of evolution in 1859. in what way foes modern evolutionary theory differ from the theory as proposed by darwin? a) darwin inferred that individuals can evolve, but modern generic science has shown that this is not true. b)darwin inferred that individuals do not evolve, but modern genetic science has shown that this is not true. c)modern science has disproved most of darwin's original theory of evolution, because darwin knew nothing about generations and their role in heredity. d)generic studies have shown that gene expression and other factors operate along with natural selection, but most of darwin's theory has been supported by modern science.

9. the history of life on earth is recorded in