Answer:
Option (D)
Explanation:
In terms of chemistry, a catalyst is usually defined as the substance that is commonly used in a reaction in order to increase the rate of reaction, without getting consumed. It helps in the reduction of activation energy.
In the given case, the lever or a person can be considered as a catalyst because both of these will increase the efficiency (or rate) in removing the rock from the top of the perch. Thus, the lever or the human will remain the same after the removal of rock as a catalyst can be recovered after the reaction.
Therefore, the correct answer is option (D).
<span>Risperidone is classified as an atypical antipsychotic drug. Primary form of administration is P.O., by mouth, once or twice a day as recommended by the physician. In liquid form, the medication dosage must be measured out using the measuring device provided with the drug. No other household measuring tool will work as it may be inaccurate. It is important that the patient tale this prescription regularly as instructed, without missing doses.</span>
The correct answer is option b, that is, the addition of carbon dioxide to the atmosphere.
If the concentration of carbon dioxide upsurges in the atmosphere due to the enhanced rate of outgassing, there will be a constant elevation in the global temperature. The elevating temperature and more dissolved carbon dioxide will result in enhanced weathering of crystal rocks as a consequence of faster rate of reactions and greater acidity.
true
Explanation:
they are called that just cause
Optical microscope.
Hope this helps.
