PLEASE HELP!! The rate of species extinction on Earth is currently very high—perhaps as high as it has been since the time of the dinosaur extinction. Which of the following human actions is not a major cause of this high extinction rate?
A. Deforestation caused by logging and the overharvesting of timber
B. Damming and diverting the flow of rivers
C. Poaching and illegal trafficking in wildlife
D. Climate change caused by the burning of fossil fuels
E. Designating areas of wilderness as public lands

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.