Dinosaurs, because they are extinct so it is impossible to determine if two individuals could have produced fertile offspring (biological species concept). Instead, scientists have to use morphological differences to determine species.
Eyeglasses<span> (also called spectacles) are</span><span> the most common form of </span>eye wear.<span> They are used to correct or improve many types of vision problems. They are a frame that holds two pieces of glass or plastic, which have been ground into lenses to correct refractive errors.</span>
Number 1. nucleic acid can be DNA or RNA with both stand for Deoxyribonucleic acid and ribonucleic acid.
Paleontology is the study of the history of life on earth as based on fossils.
