<span>Vaccines help develop immunity by imitating an infection. but it does cause the immune system to produce T-lymphocytes and antibodies. Sometimes, after getting a vaccine, the imitation infection can cause minor symptoms, such as fever.</span>
GET IN - If you are outside, get inside. If you're already inside, get as far into the middle of the building as possible.
GET DOWN - Get underground if possible. If you cannot, go to the lowest floor possible.
COVER UP - Flying and falling debris are a storm's number one killer.
It is measured by Richness and Evenness.
Richness- the number of groups (or species) related genetically or functionally.
Evenness- the proportions of the species or groups on a site.
I am so sorry but I don’t know the answer, I just needed the points to ask a question myself
Answer:
The waves are refracted by the cornea, and again by the lens. Some of them are stopped by the iris, while other will pass through the pupil. They propagate through the vitreous humor and reach the retina, where they will be focused onto the photosensitive cells. Depending on their wavelength, they may excite cones (color sensitive) or rods (black and white). The excited cells create an action potential in the optic nerve, which is combined with the signals of other photocells into a pattern that is transmitted to the visual cortex of the brain.
Sounds more like biology than physics...