Pioneer species are the first species that colonize places where there were previously no other living organisms, such as algae that colonize bare rocks. ... Therefore, they pave the way for other species to establish themselves at the location through the creation of new potential ecological<span> niches.</span>
Answer: Conglomerate, Breccia, Shale, Dolostone
Explanation: (From youngest to oldest)
Mexico's CBR started later than Sweden's.
