The staircase line indicates the position of the metalloids in the Periodic Table.
Answer:
Two and a half billion years ago, single-celled organisms called cyanobacteria harnessed sunlight to split water molecules, producing energy to power their cells and releasing oxygen into an atmosphere that had previously had none.
Explanation:
Answer:
The cell membrane or plasma membrane is a biological and thin semi-permeable membrane that surrounds the cytoplasm of a cell
Explanation:
I would say protein as I believe that carbohydrates are digested faster whereas protein takes longer to break down. It can take up to 3 hours to digest proteins as they are long well soldered molecules which constitute them and as well as being well chewed, the food must be attacked by gastric, pancreatic and billiary juices to render them down.