What is the optimal LET value in producing biologic effect? And explain why the RBE curve peaks at this optimal value? What is the reason behind the drop in the RBE curve after optimal value of the LET?

Which strategy is an example of how companies may upgrade themselves to meet changing customer preferences? a.doing door-to-door sellingb.using billboards to advertise the productsc. making online shopping services availabled.giving discounts on products

Which was most likely an effect on society that resulted from improvements in blood handling during world war i and world war ii?

Compare the parts of a cell and the cell as a whole to another common nonliving system (i.e., a car, a city, describe the parts of a cell and their primary function.