Ilana is having a baby and it is only three and a half weeks since conception. at this stage, which central nervous system structure(s) will have begun to form?

The current thought on the structure of the cell membrane is: a. a static phosphate sandwich of lipids b. a fluid-mosaic of phospholipids and proteins c. a bilayer of proteins with static lipid molecules d. an impermeable bilayer of protein molecules e. a static and permeable phospholipid single layer

List five ways we are indebted to phytoplankton

Which could be a pathway of food through an ecosystem