Agricultural science is a broad multidisciplinary field of biology that encompasses the parts of exact, natural, economic and social sciences that are used in the understanding of agriculture.
Chemical engineering is a branch of science that applies physical sciences (physics and chemistry) and life sciences (microbiology and biochemistry).
Electronics is a subfield within the wider electrical engineering academic subject but denotes a broad engineering field that covers subfields such as analogs.
Energy and Renewables
Renewable energy is energy that is collected from renewable resources, which are naturally replenished on a human timescale, such as sunlight and geothermal heat.
It is the branch of engineering that involves the design, production, and operation of machinery. It is one of the oldest and broadest of the engineering disciplines.
Petroleum and Gas
Petroleum is used in manufacturing a wide variety of materials, and it is estimated that in total, the world consumes about 90 million barrels each day.