11:
A hawk sees a mouse on the ground: It will jump on the mouse and try to kill.
The sight of mouse is a stimulus for hawk that will trigger it to prey mouse. This is because hawks feed on small mammals like shrews, moles, squirrels and mice.
12: During the fall season: Tree leaves turn brown
During spring and summer, there is a process called photosynthesis that takes place in the leaves of plants. Food is synthesized during the process and through specialized structures called chlorophyll which gives leaves green color. However, in fall seasons, the length of daylight changes as well as temperature. This occurs as a stimulus for plants which respond by break down of chlorophyll and stopping the process of photosynthesis. This causes the green color to disappear and brownish yellowish color to appear.
14: When a fish feels the catching net of a fisherman, A fish suddenly swims away:
Just like all higher organisms, God has blessed a fish with the ability to respond to the stimulus of danger. This is why when a fish sees a catching net near by or around its territory it runs away to save its life.
15: When a deer sees a predator catching animals: A deer turns away off in the opposite direction.
Just like all higher organisms, God has blessed a deer with the ability to respond to the stimulus of danger. This is why when a deer sees a catching predator near by or around its territory it runs away to save its life.
16: When sunlight falls on the plants from right side: A plant leans to the right
There is a very well understood process called phototropism that occurs in the plants. During this process, when light falls on the plant from one specific direction more than the other, a plant leans towards it. The phenomenon has been seen in many plants for example : Sun flower. It is called phototropism because Photo means light and tropism means movement or the turning of all or part of an organism in a particular direction in response to an external stimulus.
Hope it help