Considering the impacts and benefits of applying environmental biotechnology to clean polluted water systems, which of the following describes the most likely impact?

it may introduce new bacteria to the system.
it may introduce harsh chemicals to the water.
it may be an alternate way to clean oil spills.
it may be harmful to sewage treatment plants.

When coal has reached it hardest, darkest form, it is called select one: 0 a. sub-bituminous b. lignite c. bituminous d. antrhacite next page

The unique structure of the neuron is dedicated to the efficient and rapid transmission of neural signals. the relationship between neurons, the spinal cord, and the brain constitutes an elaborate communication system throughout the human body. all but one of the functions listed below are a result of this interaction.

Which of the following statements most accurately describes convergent evolution? the process in which two similar species evolve separately from each other and share similar characteristics the process in which a single species evolves into two or more new species the process in which two entirely different species evolve in response to each other the process in which two different species evolve separately from each other but still share similar characteristics