Very free points after
think about the types of instruments that a marine scientist or geologist might use to gather evidence to support the theory of plate tectonics. what specific instruments were needed to gather each of the following types of data?
(a) demonstration of the ruggedness and youth of the ocean floor
(b) confirmation of repeated reversals of the earth's magnetic field in the geologic past
(c) emergence of the seafloor-spreading hypothesis and associated recycling of oceanic crust
(d) precise documentation that the world's earthquake and volcanic activity is concentrated along oceanic trenches and submarine mountain ranges

Agenetically engineered corn plant is approved for agricultural use. the plant produces pollen that can make its own toxins. these toxins protect the corn plant against pests and no longer require the application of chemical pesticide. what is a likely impact on the farmer of growing such a variety of corn? a- the financial costs for the farmer would be lowered since less crops would be lost to pests. b-the financial costs for the farmer would be lowered since more crops would be lost to pests. c-the farmer may be held responsible for increasing chemical pollution. d-the farmer's expenses for pest control would increase due to an increase in bee population.