Which statement best describes the components of nucleic acids?
they are made up of chains of amino acids.
they are made up of carbon, hydrogen, and oxygen only.
they are made up almost entirely of carbon and hydrogen.
they are made up of nitrogen bases, sugars, and phosphates.

25) a student takes four samples of a white crystalline solid and places each in a well plate. on top of each sample, she carefully places 20 drops of clear mystery liquids a, b, c and d. her results for each well are: liquid a: the solid dissolves quickly. liquid b: the solid appears unchanged. liquid c: a brownish colored liquid is produced. liquid d: fizzing occurs and the well becomes warmer. in which well does a physical change occur?

Why does bubbling occur when vinegar mixed with baking soda

Drag each tile to the correct location. match each trait that an organism displays to a reproductive strategy.