A. Group of cells
Cells - Tissue - Organ ...
If you want to know more - look for "Biological Organisation"
It consists of the brain and the spinal cord
Answer:
The retina is the back part of the eye that contains the cells that respond to light. These specialized cells are called photoreceptors. There are 2 types of photoreceptors in the retina: rods and cones.
Explanation:
When an object from a pause state begins to move the potential energy is changed into kinetic energy. One of the example is the yo-yo, it has stored energy due to its position. Once the yo-yo begins its fall the potential energy will change to kinetic energy and vice versa.
Anthropods have exoskeletons
