Barbule hooks hold the barbules and the barbs together, maintaining a smooth surface for air to pass over. the hooks are looped around the barbules rather than fused to them. what do you think the benefit of barbules that can move might be?

Development of new communities in disturbed environments, such as a burned or a clear cut forest, is called

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.

Overtime the pond slowly becomes more acidic due to the release of chemicals from a nearby factory. which of the organisms would most likely survive the change to their environment?