x = 4

The title "To Kill a Mockingbird" refers to the idea of destroying innocence, as represented by the mockingbird symbol. The novel explores the theme of prejudice and the destruction of innocence through the eyes of Scout Finch, the young narrator.

Photosynthesis

The original inhabitants of North America were Indigenous peoples

7x^2 + x + 2

In the poem "The Road Not Taken," the speaker's attitude is one of regret and nostalgia. He expresses regret for not taking the other road and wonders what could have been. The poem is also interpreted as a metaphor for the choices we make in life and how we can never be sure about the outcome.

The main function of the circulatory system is to transport oxygen, nutrients, and hormones to the body's cells and remove waste products.

The main cause of the American Revolution was the desire of American colonists to gain independence from British rule and have self-government.

30

The theme of "The Gift of the Magi" is the true meaning of love and sacrifice. The story is about a young couple, Jim and Della, who are very poor but deeply in love. They both make sacrifices to buy each other Christmas gifts, and in the end, the true value of their gifts is realized as the love and sacrifice they put into them.

A mineral is a naturally occurring, inorganic substance with a unique chemical composition and crystal structure, while a rock is made up of one or more minerals, or other organic materials, and can be formed through natural processes such as erosion, compression and heat.

The main goal of the Civil Rights Movement was to end segregation and discrimination against African Americans and to secure equal rights and opportunities for them.

4

The cause of the tragic ending in "Romeo and Juliet" is the feud between the Montague and Capulet families, which leads to a series of events that ultimately leads to the deaths of Romeo and Juliet. Additionally, the impulsiveness and poor judgement of Romeo and Juliet also contributes to the tragic ending.

In a physical change, a substance changes form but not its chemical composition, while in a chemical change, a substance undergoes a chemical reaction and forms one or more new substances with different chemical properties.

The main cause of World War I was the assassination of Archduke Franz Ferdinand of Austria in 1914.

15

In "The Great Gatsby," the green light represents Gatsby's longing and unrequited love for Daisy. He sees the light shining from across the water, which represents Daisy and the life he wants to have with her. Throughout the novel, Gatsby reaches out towards the light, symbolizing his efforts to reach Daisy and his longing for a life with her.

Endothermic reactions absorb energy from the surroundings, while exothermic reactions release energy to the surroundings.

The main leaders of the French Revolution were Maximilien de Robespierre, Louis Antoine de Saint-Just, and Georges Danton.