This video covers:

- The 3 main functions of the kidn
eys:
1) removi
ng waste,
2) regulating level
s of ions, and
3) regula
ting levels of water
- How the kidneys can achieve all of this using filtration...

We've been talking about animals in the context of ecology, so let's continue and examine water balance, as well as photoperiods. How do animals regulate water intake? How do they excrete waste? How do they interact with sunlight? Let's...

Homeostasis explains how organisms maintain homeostasis by analyzing thermoregulation, water regulation, and oxygen regulation.