Which organisms were the least numerous? Why? (In a forest environment!)

Fan egg cell containing the (n+1) number of chromosomes combines with a sperm cell containing the (n) number of chromosomes, what is the result of this union? a) all future somatic cells of the organism will contain the (2n + 1) number of chromosomes. b) all future somatic cells of the organism will contain the (2n - 1) number of chromosomes. c) only certain somatic cells of the organism will contain the (2n + 1) number of chromosomes. d) all future somatic cells of the organism will contain the normal diploid number of chromosomes.

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

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes