When starting to slide down a waterslide, why would a person push on the sides of the slide? the person is using the slide to make himself move. the person wants the slide to move. pushing on the slide does not do anything for the person. the person is trying not to get wet.

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.