Which is the most accurate statement about ferns? a) ferns belong to the same phylum as moss. b) ferns are nonvascular plants. c) ferns developed after mosses appeared. d) scientists have found several hundred species of ferns.

Which statement best describes a keystone species? o a. it has littlelmenetic variation. it has an extremely high population. 0 b. 0 c. it remains unaffected by all environmental changes. od. it has a strong influence on the ecosystem. 0 e. it's the first species to populate a new ecosystem.

In what for do plants utilize nitrogen? why do they need nitrogen?

Which of these is not a nucleotide base found in dna?