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The oldest rock layer is represented by the letter
The youngest rock layer is represented by the letter

African penguins, which inhabit the coasts of southern africa, were classified as an endangered species in 2010. two significant threats to their survival are ecosystem damage from oil spills and overfishing by humans. overfishing depletes the food supply of african penguins. the best method to reduce the threat of overfishing would be to . the risk of oil spills could be reduced by increasing the use of , which should oil consumption. if an oil spill does occur, could be used to remove the oil so the ecosystem may more quickly recover.

Why do we perceive objects as retaining their brightness under different lighting levels?

What should be the strand of complementary dna produced by the strand of dna shown below cgt ata