The answer is D.
An endothermic reaction involves absorbing heat whereas an exothermic involves releasing heat.
To see the solar eclipse it is rare because the moon doesn't hide all of the sun up.
Natural selection and speciation: 'Ecological speciation'. ... Natural selection is generally recognized as a central mechanism of evolutionary change within species. Thus, natural selection plays a major role in generating the array of phenotypic and genetic diversity observed in nature.
Pretty sure it’s the first option !
