Describe the contributions of Schlieden and Schwann to the cell theory.

Schwann - In 1839, he cells are the basic unit of animal structure

Schlieden - In 1838, he discovered cells are the basic unit of plant structure

Hope this helps

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds