The core of an atom is the nucleus which is composed of Neutrons and Protons.
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Another name for rooster is a hen.
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Answer:
Air pollution
Explanation:
Pollution is the release of substances into an environment above a level that it becomes harmful to the organisms living in such environment. Pollution can occur both in aquatic and terrestrial environment. Pollution in the terrestrial environment can either be in the soil or in the air.
Burning of wastes leads to the release of smoke into the atmosphere. Smoke from waste burning consist of particulate matters, water vapour and varying levels of carbon doxide, carbon monoxide, oxides of nitrogen, oxides of sulphur, etc., depending on the content of the waste. These components have both short and accumulative long term effects on the environment. The effects include;
In an ecosystem when waste is burnt it emits out pollutants which are released in air thus causing air pollution.
Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.
Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.When waste is burnt, it gives out pollutants in the air thus causing air pollution.
Hence, the problem which is most directly caused by burning waste is air pollution.
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The right answer is the activation energy.
The catalyst increases the reaction rate by introducing new reaction paths (mechanism), and lowering its activation energy, or activation Gibbs free energy. By doing this it can increase the speed, or lower the temperature of the reaction. It is important to note that the catalyst does not alter the total Gibbs free energy of the reaction which is a system state function and therefore has no effect on the equilibrium constant.
Answer : The correct option is, the activation energy
Explanation :
Activation energy : Activation energy is defined as the minimum amount of energy absorbed by the reactant molecules so that their energy becomes equal to the threshold energy.
During the chemical reaction, the reactants react to form product. When a catalyst is added to a chemical reaction then the reaction becomes faster that means the rate of reaction increases and the activation energy decreases.
In the given diagram, 'G' is the activation energy without catalyst and 'H' is the activation energy with catalyst.
The energy diagram is shown below.