Why are elements called the building blocks of matter

A. They stack up nicely.

B. They make-up all matter.

C. They make-up most of the matter around us.

Answer please.

Where do most people in arabia and iraq live? a. in the fertile crescent b. in the rub, al-khali c. in cities d. in and around mecca

Which best describes california population when it became a state in 1850? a. because of the gold rush attracting settlers all over the world california population diverse. bcalifornia had banned foreign immigrants at the start of the gold rush. so, the states population was made up of entirely of americans from other parts of the country. c california had a large african population because many southern planters had moved their enslaved africans to start large farms. d the indian removal act had led to the relocation of thousands of eastern native americans to california. as, a result the majority of californias population was native american

How has our understanding of the first sentence of the declaration of independence changed over time?