high school environmental science

Plant responses to soil conditions and atmospheric environment must be exploited to the maximum to produce a high yield per unit area of lan..

Light does not require a material medium for its propagation. In a given medium light travels with a very high but finite velocit..

It is secreted by the secretory glands of the stomach wall. It is highly acidic as it contains hydrochloric acid (HCl). It also contains enzymes like pepsin and renin. Both act on protein..

The patient develops severe headache, high fever, painful contractions of the throat muscles and ches..

Metals have high melting and boiling point. Tungsten has the highest melting point where as silver has low boiling point. Sodium and potassium have low melting point..

It is present in abundance They have no moving parts and hence require little maintenance and work quite satisfactorily without any focusing device It does not cause any environmental pollution like the fossil fuels and nuclear power Solar cells last a longer time and have low runnin..

Good height, high tillering and profuse branching are traits, desirable for fodder crops. Cereal crops should be short, for better productivity. Developing varieties with agronomic traits that are tailor-made will ensure higher yiel..

We hear various kinds of sound in our daily life, pleasant sounds called the musical sounds, unpleasant sound called the noise, loud sound, high pitched sound et..

The patient develops severe headache, high fever, painful contractions of the throat muscles and chest. Hydrophobia (fear of water) sets in as the virus selectively attacks the brain i.e., the nervous system. Damage to the central nervous system causes paralysis and painful deat..

As acids and bases are highly corrosive and reactive substances it is important to understand their reaction and responses on substances commonly found around us. It helps us to understand the outcomes of using them in daily lif..