bone marrow - n. a soft substance that fills the bones of people and animals

feature - n. an interesting or important part, quality, ability, etc.

fund-raiser - n. a social event held to collect money for a political party, charity, school, etc.

online - adj. done over the Internet

sea lion - n. a large seal that lives near coasts in the Pacific Ocean

site - n. the place where something (such as a building) is, was, or will be located

spot - v. to see or notice (someone or something that is difficult to see or find)

transplant - n. to remove (a plant) from the ground or from a pot and move it to another place