Antioxidants
synthetic or natural substances added to products to prevent or delay their deterioriation by action of oxygen in air. In biochemistry and medicine, antioxidants are enzymes or other organic substances, such as vitamin e or beta-carotene, that are capable of counteracting the damaging effects of oxidation in animal tissue.
Nutrients in the soil are essential to the proper growth of a land plant. This tutorial deals with the properties of soi..
The sea was teeming with life. Eventually, through reproduction and continued variation, fish came about. There are over..
Obtaining air outside an aquatic environment required species to acquire suitable adaptations, and this was the case of ..
This tutorial looks at the relationship between organisms. It also explores how energy is passed on in the food chain an..
This tutorial deals with the abiotic factors of the freshwater environment that determine what sort of life would be sui..
The gastrointestinal system breaks down particles of ingested food into molecular forms by enzymes through digestion and..