I believe it D because they have to have data , they also guess and really they also have opinions
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>Reproduction during which one organism produces genetically identical offspring is called asexual reproduction.</span>
For a punnett squares the F is the dominant gene and the f is the recessive gene
So the top would most likely be a male and the top would a male and the side would be the female
This is for kids
