Why is carbon essential to all known life on earth?

Which group is noted for the independence of gametophyte and sporophyte generations from each other? a) ferns b) mosses, hornworts, and liverworts c) charophytes d) angiosperms e) gymnosperms

You can tell from this karyotype that the individual is female because the karyotype has two chromosomes labeled

What does natural resource management aim at ?