3types of organisms found in a ecosystem

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

In sweet pea, gene c is responsible for color production and gene p is responsible for the purple color pigment. both of them are located on two different loci on different chromosomes. the flowers will be purple only when the plant has the genotypes as c_p_. no color will be produced with genotypes: ccpp, ccpp, ccpp, ccpp. thus, gene c controls the expression of gene p. what pattern of inheritance is exhibited here? a. pleiotropy b. epistasis c. multiple alleles

Describe how a non-resistant staphylococcus aureus bacterium can produce a bacterium that is resistant to methicillin