The correct answer is D. There is no single topic sentence.
Explanation:
A topic sentence is a sentence that summarizes the main idea of a paragraph, this sentence is usually the first sentence in the paragraph and states what the paragraph is about. On the other hand, the paragraph presented here deals with multiple topics or concepts including the Earth's crust, the plates, the Earth's mantle, volcanoes, earthquakes, and mountain ranges, this means the paragraph is related to geography but explores multiple ideas that are not summarized in any of the sentences presented in the paragraph, neither at the beginning nor at the end of it. Thus, as there is no any sentence or phrase that states what the paragraph is about as a unit or summarizes all the ideas of the paragraph there is no a single topic sentence because this paragraph includes multiples ideas that might be difficult to summarize in only one topic sentence.
Its paws were caked in mud is the sentences includes a possessive pronoun.
Both discuss their love for another; Spenser says his love will outlast the world, while Shakespeare wants to be forgotten in order to spare his love any pain.
Spenser is trying to immortalize his love, although the waves (or the natural world) wash away his words. The tide says that Spenser is being foolish. However, at the end of the poem, the final couplet adds further meaning: that nothing lasts forever -- except for their love.
Shakespeare's poem is a bit more negative. He says that after his death, his love should not mourn him. Shakespeare says he so loves the subject of the poem that he would rather be forgotten than a source of grief. The couplet adds further meaning to this idea by saying that he doesn't want his love mocked for his grief.
Thus, both poems discuss love and the passage of time; their individual messages differ.
Animal cells are more round-shaped, while Plant cells are more box-shaped due to having a cell wall.
True. they help you understand new vocabulary and that also help you understand what that sentence is about.