By studying fossils, scientists can learn how much (or how little) organisms have changed as life developed on Earth. There are gaps in the fossil record because many early forms of life were soft-bodied, which means that they have left few traces behind. This is why scientists cannot be certain about how life began.
Pollution plays a huge factor. With factories in demand, more and more substances are being released into Earth's atmosphere, resulting in higher temperatures.
Stegosaurus and ankylosaurus are united in a group called; Thyreophora
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What is the name of the species group?</h3>
Stegosaurus and ankylosaurus are united in a group called Thyreophora. They belong to that group because under the classification of dinosaurs, the Thyreophora consist mainly of Stegosauria which are commonly known as the plated dinosaurs and Ankylosauria which are commonly called the armored dinosaurs.
It should be noted that this group could also include their more basal relatives like Scutellosaurus and Scelidosaurus.
Read more about Species Group at; brainly.com/question/1918761
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Gel electrophoresis is a technique used to separate DNA fragments according to their size. This is from Khan academy so I believe it is reliable.
