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Food Web:
Within an ecosystem, there are many different food chains. Some organisms may be involved in several of the food chains at the same time. So a number of food chains become interwoven into a food web, that may be very complex. The term food web is often used to describe more accurately, the actual feeding relationship within a given ecosystem. In a forest, if deer become rare or get wiped out by a disease or any natural . calamity, the predator, such as lion, can feed on other animals such as fox, wolf. crane etc. rill the usual prey animals are availublt again . In brief', we can say that many intterlocking fuud chains make it possible for rhr living beings to survive rninor or major setbacks and changes in their surroundings. Thus, interlocking food chains provide stability to the ecosystem.
Why do organisms need water? Organisms need water for the following reasons: (i) All cellular processes need water as a medium. Usually, the reactions that take place in our
Miller's Experiment The above theory could be tested by recreating in the laboratory on a small scale, the conditions which must have existed when life originated on the
Define the Regulation of Aldosterone Secretion Increased potassium ion concentration and decreased sodium ion concentration increases the aldosterone secretion. Renin-angiotens
Solar energy: The energy we get today from the fossil fuels like coal, is in reality sun's energy, trapped in them millions of years ago. Plants make their food and grow bec
Lab coats : The lab coat should fit well and should be buttoned up correctly at all times. Cotton lab coats are more suitable than those made from nylon as the former could absorb
Let us recall briefly what all we have learnt about fire hazards in this unit. Fire accident can happen due .to a number of reasons, like, flammable liquids, faulty electrical and
50ml of a .432 M solution of a blue dye solution was pipette into a 200mL volumetric flask and DI water was added to the mark and th flask was thoroughly shaken. Then 10mL of THAT
A Cloud Made of Comets The cold outer areas beyond Pluto are the regions of comets, those visitors that dash, around the Sun, seldom to be seen again. Comets are of grei3t
is salt separated by filtration
Biochemical Evidence: As we had said earlier in section 13.2, Darwin had recognized that humans and the great apes shared many physical characteristics. This led him to co
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