Artificial ecosystems are human-made complexes that replicate some aspects of the natural environment.
The development of refrigeration, freezing, dehydration, preservation, and irradiation provide long-term storage of food and reduce the health risks caused by tainted food.
Agriculture includes a combination of businesses that use a wide array of products and systems to produce, process, and distribute food, fiber, fuel, chemical, and other useful products.
Biotechnology has applications in such areas as agriculture, pharmaceuticals, food and beverages, medicine, energy, the environment, and genetic engineering.
Conservation is the process of controlling soil erosion, reducing sediment in waterways, conserving water, and improving water quality.
The engineering design and management of agricultural systems require knowledge of artificial ecosystems and the effects of technological development on flora and fauna.
Energy comes in many forms.
Energy should not be wasted.
Energy comes in different forms.
Tools, machines, products, and systems use energy in order to do work.
Energy is the capacity to do work.
Energy can be used to do work, using many processes.
Power is the rate at which energy is converted from one form to another or transferred from one place to another, or the rate at which work is done.