Which adaptation do ferns, gymnosperms, and angiosperms have that mosses do not have?

Which of the following is not a possible effectof increasimg carbon dioxide levels in the atmosphere ?

Environmental science are unconsidered with methods to preserve natural resourcesa.trueb.false

Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population.b) the separated population is small, and genetic drift occurs.c) the isolated population is exposed to different selection pressures than the ancestral population.d) different mutations begin to distinguish the gene pools of the separated populations.e) gene flow between the two populations is extensive.