high school environmental science

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 proteins. However, renin is present only in young children. It digests the milk proteins. Pepsin is secreted..

The water flowing in a river is collected by constructing a high rise dam. This stored water is then allowed to fall from the top of the reservoir on to a water turbine located at the bottom of the dam. The fast moving water rotates the blades of the water turbine, which in turn rotates..

Introduction - 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..

Lastly, we come to the nature and wildlife enthusiasts who are not in any way dependent on the forests. Environmentalists and Nature Conservationists, NGOs like the World Wide Fund for Nature (WWF), Centre for Science and Environment (CSE), International Union for Conservation of Nature..

The heating effect of current is utilised in the electrical heating appliances such as electric iron, room heaters, water heaters, etc. All these heating appliances contain coils of high resistance wire made of nichrome alloy. When these appliances are connected to power supply by insula..

Coal is formed in nature by the 'carbonisation' of wood. Conversion of wood to coal under the influence of high temperature, high pressure, and in the absence of air is termed carbonisation. Amongst coal varieties, anthracite is the purest form. It contains about 94 - 95% o..

Coal - Coal is formed in nature by the 'carbonisation' of wood. Conversion of wood to coal under the influence of high temperature, high pressure, and in the absence of air is termed carbonisation. Amongst coal varieties, anthracite is the purest form. It contains about 94 - 95%..

This is a highly reputed breed, which produces long white eggs. The body size is small and consumes less feed...

Question: Why are wrestlers and sportsmen recommended to have egg, meat and fish as a part of their diet? Answer: Sportsmen and wrestlers are recommended to have egg, meat and fish as a part of their diet because they contain high amounts of protein which is essential for grow..

Question: How would you separate a mixture of ammonia and hydrogen? Answer: Passing the mixture through water can separate the mixture of ammonia and hydrogen. Ammonia being highly soluble dissolves in water while H 2 passes out as ga..