Chordates are animals with backbones. Animal groups in the chordate phylum include fish, amphibians, reptiles, birds and mammals. Animals with backbones are the most highly evolved groups of animals, the most complex and complicated. They have interior skeletons and have bilateral symmetry.
The thesis is the point your paper is trying to prove. Here are some essential points to keep in mind about the thesis, starting with a definition. Thesis (plural: theses, pronounced THEES-eez): The point that an essay is trying to prove. Also known as the claim or argument. Everything in a persuasive essay relates to the thesis, either as evidence, explanation, elaboration or rebuttal of alternative claims. Think of the thesis as the spine of your paper. Just as all the parts of your body are connected to the spine, and without the spine your body could not stand, so too in your essay all parts must be connected to the thesis, and without the thesis the essay cannot stand.
Analytical Thesis Statements Adapted from Writing Analytically by Rosenwasser and Stephen To analyze something is to ask what that something means. An analytical essay answers how something does what it does or why it is as it is. Therefore, a thesis statement in an analysis paper should be answering a HOW or WHY question. A strong thesis makes a claim about the subject that needs proving. It provides the writer (and the reader) with a clearly focused lens through which to view the subject. A weak thesis either makes no claim or is an assertion that does not need proving. It is a fuzzy lens that will not help the writer (or the reader) be guided to a better understanding of the subject. Most weak thesis statements suffer because they are overly broad (or not specific enough)