One positive impact of the use of biotechnology in farming has been the growth of crops able to sustain global warming. Also, t<span>hrough biotechnology, more specialized herbicides have been replaced by a smaller number of safer, broad spectrum compounds with reduced environmental impacts.</span>
Answer:
Shield volcanoes are built by many layers over time and the layers are usually of very similar composition. The low viscosity also means that shield eruptions are non-explosive. There are two types of lava flows, pahoehoe which is a ropy type of lava that flows easily (low viscosity).