Answer:
may be they are history and geography
Answer:a positive feedback
Explanation: positive feedback is a type of feedback mechanism employed by the body,in which an output is enhanced or acclerated.
In contrast to negative feedback where the body regulates it's internal conditions by reducing the effect of a stimuli,In positive feedback ,the body enhances the effect of the stimuli.
It is not common as negative feedback in homeostasis.
An example is the increasing release of oxytocin to promote contractions during childbirth,until the child is born.
Another example is the accumulation of blood platelet , in the site of blood vessels injury to
cause blood clotting.
Neuroglia<span>, which is sometimes referred to as "</span>glia", are cells that are not neurons but merely support and provide protection for neurons. They are called 'non-neuronal cells' and they exist<span> in the </span>central nervous system<span> (</span>brain<span> and </span>spinal cord<span>) and the </span>peripheral nervous system (nerves outside the brain and the spinal chord).
Answer: chlorophyll
Explanation: the green color compound present in the leaf is chlorophyll. Chlorophyll is a chemical or a molecule that is present within the chloroplast of the leaf.
This compound is responsible for the conversion of carbon dioxide and water with the help of light energy of the sun into sugars. And plant prepares its food through this chemical compound. This process is known as photosynthesis.
