<h2>Darwin's theory of evolution</h2>
Explanation:
When Charles Darwin considered some of the unique structures found in modern animals, like the feathered wings of birds, he famously proposed that modern animals must have evolved from earlier forms that lacked those structures. He also predicted that there must have been some intermediate structure between them which may be found in fossils.
Evolution is the process by which certain traits develop within an population, become fixed and make the population's survival more efficient. According to theories of evolution the modern day species were not the same million years ago but they gradually got modified with time and so they differ significantly from their ancestors.
<h3><u>Answer</u>;</h3>
Key
A sorting device that is useful in classifying by observation is a <u>key</u>.
<h3><u>Explanation</u>;</h3>
- <em><u>Classification key or taxonomic key is a device that is used by scientists to identify unknown organisms. </u></em>
- They are constructed so that the user gets a series of choices about the characteristics of the unknown organisms.Thus, by making the correct choice at each step, one is led to the identity of the specimen.
- Therefore<u><em>, keys can be used to identify a living organism or determine which group it belongs to</em></u> by answering questions on the key about characteristics of living things.
Laurasia and Gondwanaland. I know that last one seems weird but it’s true
What oragnalles are there i dont see any examples of them