2.77(a) understand that homeostasis is the maintenance of a constant internal environmental and that body of water content and the body temperature are both examples of homeostasis

HOMEOSTASIS
homeo --> staying the same
stasis --> fixed point/condition
homeostasis --> conditions which are kept the same/constant

HOMEOTHERMIC
homeo --> staying the same
thermic --> temperature
homeothermic --> maintaining the same temperature

An example of homeostasis/homeothermic is the process of thermoregulation in which organisms such as mammals use to maintain a constant body temperature even when the temperature in their environment change, differing from other animals which body temperatures vary depending on their environment.

Mammals maintain a constant body temperature because at a certain temperature (optimum temperature) the enzymes within its body works best.

2.76 organisms are able to respond to the changes within their environment

SENSITIVITY

the types of changes in the environment include; light level, temperature, pressure and chemicals.

these are stimuli in which organisms can detect using receptors within them.

organisms also have effectors-such as glands and muscles- used to respond to the stimuli detected by the receptor.

the effector ensures the survival of the living organism by responding to the stimuli detected by the receptor.

2.75 Urine

2.74 ADH.

2.73 Glucose reabsorption

2.72 Water re-absorption.

2.71 Ultrafiltration