Eye color can change depending on your emotions. If your mad, your pupils are large and your eye color gets darker. If your happy, we’ll vise versa. People born with brown eyes will remain the rest of their life with brown eyes. If a baby is born with blue eyes, their color will change to hazel, light green, or brown. By the age of 12, kids will have their main eye color set for the rest of their lives. The color of your eyes change through time due to the amount/exposure to light that you eye absorbs. The iris is what reflects or takes in light. If your eyes reflect more light than it takes in, then your eyes will appear lighter in the earlier stages of your life. If it absorbs light more than it reflects it, well you will be stuck with dark colored eyes for the rest of your life (mostly brown eyes). People with two different colored eyes are either born with it or experience it at one point in their life.
One reason someone’s eye color could be different from the other could be what’s called heterochromia. Which is when the melenocites in your eye are shaken after a traumatic event. The trauma to the melanin in your eye can transform the iris to a lighter or darker shade.
Period of revolution of Mercury is just "88 days" as compared to 365 days of Earth, it is because of short axis of mercury, so it takes less time to complete it!
The Cytotoxic T lymphocytes provide cell-mediated immunity. This type of immunity does not involve antibodies, rather act by activation of the phagocytes. After the release of T-lymphocytes, various cytokines are also released, in response to the presence of an antigen.
