Body temperature control is an example of negative feedback, a process by which the body responds to a stimulus by correcting the change and bringing the body back to the original setting.
What is stimulus ?
A stimulus is a noticeable change in the internal or external environment of an organism's physical or chemical composition. Sensitivity is the capability of an organism or organ to perceive external stimuli and to respond appropriately to them.
The hypothalamus controls your body temperature in a manner similar to how a thermostat controls the temperature in your home. It does this by responding to both internal and external stimuli and making adjustments to keep your body's temperature within one or two degrees of 98.6 degrees.
Im not really sure about the water, other than the trees wouldn't be absorbing it so there would be extra? But a huge amount of trees like that produce a lot of oxygen, so there would not be less oxygen in the environment. Hope this helps!
