Answer:
squamous epithelium consists of a single layer of flat cells. It is found in lungs,heart and blood vessels.It allows the movement of materials across it.
stratified epithelium has many layer of flat cells.It is present in lining of oesophagus and mouth and also over the skin
A concentration gradient and membrane that allows water to pass, but not the solute, must be present
Well they can begin as cosmic rays colliding with water molecules to create clouds. Hope this helps :)
I would say D. natrural selection
Answer:
yes
Explanation:
The leaves of purple plants still have chlorophyll which looks green to us. So since they have chlorophyll, they can carry out photosynthesis.
