I would have to say cool air begins to sink and warm because precipitation is pretty much snow or rain
Answer:
Keystone species have low functional redundancy. This means that if the species were to disappear from the ecosystem, no other species would be able to fill its ecological niche. The ecosystem would be forced to radically change, allowing new and possibly invasive species to populate the habitat.
Explanation:
Transporting molecules through a membrane against their concentration gradient is called active transport. It needs a transporter protein and energy ATP. ATP doesn't bind to the glucose molecules, the transporter does. Also, the glucose isn't broken down So the only correct answer is B... Hope this helps
