D, because the air s moving as in longitudinal waves which means <span>a wave vibrating in the direction of propagation, and probation means that the making of more and replacing</span>
Yearly dental visits are a part of good dental hygiene because the dentist will check for cavities, fix them, clean your teeth very thoroughly (or whitening treatment), and check the progress and movement of your teeth. They can also recommend when dental surgery is necessary, for instance, if you have extra teeth that can be removed or when your wisdom teeth are coming in. Hope this helps! :)
1. replication
2. four genetically identical cells
The semicircles are probably the longitude and the latitude, if that what you are talking about.
