Coffee and cocoa taste bitter because they contain what

Which element is used in photosynthesis found in atmosphere and fixed by bacteria?

How is the male reproductive system different from other body systems? it isn’t necessary to vital signs. it monitors other body systems, and adjusts if necessary. it transports items from one system to another. it is the only system that produces hormones in the male.

Does mitochondria still meet the definition of a eukaryote why or why not?