Cells contain parts known as organelles. these parts are specialized. what does this mean?

What is the "great pacific garbage patch"? a large area of marine debris concentrated by rotating ocean currents a large area around the pacific rim where debris collects from natural disasters such as tsunamis an area in the pacific ocean where trash is intentionally dumped due to lack of landfill availability a large trash dump located in hawaii

Compare the composition of the moon's surface with the composition of the earth's surface.

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?