Answer correctly please

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

Protein and polypeptide sequences can be determined by first partially hydrolyzing the protein or polypeptide followed by amino acid sequencing of the fragment pieces using the chemical degradation process known as edman degradation. determine the sequence of the initial (18-amino acid) polypeptide that produces the following five partial sequences after hydrolysis and edman degradation.

Which of these is not an obstical to the future of space exploration? fundingresearch ideas technologytime