Last seen: Mar 10, 2022
It is true that any change in the. abiotic/biotic factor will arrest a particular serial stage leading to a pre-climax condition before the climax sta...
Primary productivity varies from ecosystem to ecosystem because it depends on the plant species inhabiting the area and their photosynthetic activity....
Transfer of energy in an ecosystem follow 10% law, i.e., only 10% energy is transferred from one trophic level to higher trophic level. So, if lion fe...
Poaching (hunting) of tiger disturbs the ecological balance in ecosystem. Tigers are important predator of forest. Predator keeps prey population unde...
Microbes are referred to as heterotrophs and saprotrophs. They fulfil their energy requirement by feeding on dead remains of plants and animals throug...
The energy from the sun reaches the food chain through the primary producers (plants). This energy is passed on through successive trophic levels in t...
Human activities have significantly influenced the carbon cycle. Rapid deforestation and massive burning of fossil fuel for energy and transport have ...
The rate of decomposition is regulated by climatic factors like temperature and soil moisture as they have an effect on the activities of soil microbe...
Aquarium has all the biotic and abiotic components of an ecosystem, so, aquarium is a complete ecosystem.
In a food chain, only 10% of the total amount of energy is passed on to the next trophic level from the previous trophic level. So, there is a decreas...
The transfer of energy follows 10 per cent law - only 10 per cent of the energy is transferred to each trophic level from the lower trophic level. So,...
They are all detritivores i.e., decomposing organisms which feed on dead remains of plants and animals.
(i) Desert ecosystem (ii) Opuntia, Cacti and Acacia
Let the order of the reaction with respect to A be x and with respect to B be y. Therefore, r0 = k[A]x [B]y 5.07 x 10-5 = k[0.20]x[0.30]y .......
(i) The differential rate equation will be - = k[A][B]2 (ii) If the concentration of B is increased three times, then - = k[A][3B]2 = 9.k[A][B...
(i) Average rate of reaction between the time interval, 30 to 60 seconds, = = = = 4.67 × 10-3 mol L-1 s-1 (ii) For a pseudo first order rea...
The rate constant is nearly doubled with a rise in temperature by 10° for a chemical reaction. The temperature effect on the rate constant can be re...
Let the concentration of the reactant be [A] = a Rate of reaction, R = k [A]2 = ka2 (i) If the concentration of the reactant is doubled, i.e. [A] ...
Correct answer: (b) I– > Br– > Cl– Explanation: Since the leaving group breaks away as a base, it is easier to displace weaker bases as comp...
Correct answer: (a) Explanation: 3° carbocations are most stable.