Asking students to demonstrate their understanding of the subject matter is critical to the learning process; it is essential to evaluate whether the educational goals and standards of the lessons are being met.
Chemical engineering. Chemical engineering is a branch of engineering that applies physical sciences (physics and chemistry), life sciences (microbiology and biochemistry), together with applied mathematics and economics to produce, transform, transport, and properly use chemicals, materials and energy.
Environmental engineers are specialists who study and perform environmental engineering. To this end, they take doctrines of engineering, science, biology and chemistry to formulate solutions to public health issues and environmental problems. Essentially, they study the effects technology has on the environment.