oxygen cycle in the taiga

Nitrogen forms nearly 78% of the volume of air. Earlier, the useful significance of nitrogen was not known and it was considered to be inactive. At that time, nitrogen was considered important only because it was known to moderate the processes of respiration and combustion, by diluting the effect ..

Just as the human body needs nutrients for its healthy growth, plants also need certain nutrients for their growth. The nutrients required by plants for their healthy growth are 16 in number. They are carbon, hydrogen, oxygen, nitrogen, phosphorus, potassium, calcium, magnesium, sulphur, ..

Nutrients - Just as the human body needs nutrients for its healthy growth, plants also need certain nutrients for their growth. The nutrients required by plants for their healthy growth are 16 in number. They are carbon, hydrogen, oxygen, nitrogen, phosphorus, potassium, calcium, magnesiu..

It is defined as the ratio of the net external work done by the engine during one cycle to the heat absorbed from the source during that cycle. It is denoted by h . The work W obtained in each cycle is called the output while the heat Q 1 extracted from the source in o..

F.F. Blackman (1905) demonstrated the presence of the dark reactions for the first time. It utilises the chemical energy temporarily stored in the products of light reaction. It is also called the Calvin cycle. It is a series of reactions taking place in a cyclic manner. It can be repres..

-II. The electrons are ultimately accepted by the electron carrier NADP. The energy yield from the light reactions is contained in molecules of NADPH and ATP. In the dark reactions, which take place in the stroma, NADPH and ATP produced in the light reactions are used to reduce carbon dioxide to or..

Oceans occupy large part of earth. It is almost 2/3 part of earth's surface. It is often presumed that vast hydro source of oceans is a wasteful collection. But, without the presence of oceans, the hydrological cycle is incomplete. In absence of oceans, land wouldnt have receiv..

i) Considerable amount of phosphorus from the soil rock is washed into the sea by rains and floods (an estimated amount of 2 million tonnes of phosphotic rock is lost to sea) where sea weeds take up phosphorus and is then passed onto fishes and sea birds. ii) Terrestrial plants absorb pho..

Blue green algae are autotrophic and nitrogen fixing organisms unlike heterotrophic and symbiotic nitrogen fixing microbes discussed above. They manufacture their food by photosynthesis, as they have chloroplasts. Hence, they can live independently. BGA like Anabaena and Nostoc are found to live on..

C. Between places the variation of mean annual temperature or seasonal temperature vary from 11-20 o C. In this background most people may conclude that a change in air temperature to the tune of 0.88 to 1.02 o C is not significant. Unfortunately, this is not true. Because at g..