Some say the precautionary principle is analogous to the judicial concept "guilty until proven innocent ." In the United States , one is " innocent until proven guilty " in the court system . Do you think regulators in the United States should apply the precautionary principle to chemicals for which toxicity levels have not been determined ? Explain your reasoning.

In a classic experiment using pea shape, mendel conducted two separate genetic crosses. in the first cross the parent plants were “true breeding” for pea shape; one had round peas ( r )and the other had wrinkled (r). the first cross produced a filial 1 generation of all round peas. in the second cross, mendel bred plants from the filial 1 generation. this cross produced different results. out of approximately 1000 plants, about 75% were round and 25% were wrinkled.

In the respiration-photosynthesis cycle shown above, what are the products of cellular respiration that belong in box 2?

Which type of stimulus do mechanoreceptors detect? sound pain heat light