The best way to describe a human sperm cell is a tad pole (Baby frog). Like the sperm cell the tad pole has a head, body and a tail. Though tad poles are finished products, the sperm cell needs to combine with the egg cell for it to be fertilized.
Answer: Hope this helps: the 11 organ systems of the body are the integumentary, muscular, skeletal, nervous, circulatory, lymphatic, respiratory, endocrine, urinary/excretory, reproductive and digestive.
<span>-The Skin aging
- The sunburn or actinic erythema
-The Photosensitivity reactions
- The "solar allergies" (The light eruptions)
-The Heat stroke
-The Skin cancer
On eye
- The effects of sunlight on the eyes may cause: Photokeratitis, conjunctivitis, cataract ...
-The Ultraviolet radiation, affecting the skin, can have harmful effects on the immune system<span>.</span></span>
