Non-renewable resource
Explanation:
The cheetahs can be considered a non-renewable resource. Non-renewable implies that a resource cannot be replenished at it current rate of depletion.
How much has the cheetah's population declined:
percentage declination = 
x 100
Population in 1990 = 100,000
Population today = 12,000
Percentage declination = 
x 100 = 83.3%
We can see that the cheetah has suffered a whooping 83.3% decline in their population.
A renewable resource is one that can be replenished as it is being used such as water, air, e.t.c.
Learn more:
Renewable resources brainly.com/question/6944540
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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).
Answer:
mantle i believe the answer should be mantle
My guess would have to be hydropower, since water isn't an un natural substance
