Which is the independent variable in this graph? population
straight lines
years
United States

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

We all have different forms of genes from our parent(s).what are these different forms called? a.alleles b.characters c.dna d.resources

The limbic system structure that regulates hunger is called the