Albinos should avoid sunlight because they lack melanin<span>. This is a natural protection from sunlight. </span>Dark brown<span>, symmetric patches of </span>pigment<span> on the face. During pregnancy, this is </span>called<span> the mask of pregnancy.</span>
The epiglottis is a flap in the back of your tongue that prevents food from entering the larynx. When your mouth is closed, the epiglottis is in place and blocks the larynx opening. If your mouth is open, the flap lifts and the larynx is no longer blocked so you can breathe. This is why it's important to not chew with your mouth open... if you do, then food can go down the larynx by mistake.
i think the answer is
a substance that is naturally found in the brain
Depending on the similarity of the plant species .
Same species usually have similar looking or have similar function of pollen
whereas different species of plant differ in method of spreading their seeds therefore their seeds differ in shape size weight etc ...
a hibiscus plant containing a flower has pollen that are small and grainy which enables it to stick to insects when they come for the juicy nectar. For a coconut tree it has seed which large in size hollow and light weight enabling it to float in water and reach another place to grow and increase their species once again
<span>Models can be very helpful in describing the different arrangements of atoms or particles and their interactions with one another as a substance changes state. It can be very useful to have an item that demonstrates how a crystalline material forms a lattice and how its internal alignment changes as in passes from a solid into a liquid phase.</span>