The best approximation of the true outer
boundary of the continents is the seaward edge of
a. contirental shelf.
b. mid-ocean ridge.
c. present-day shorelines.
d. ocean trenches.

Although there are a limited number of amino acids many different types of proteins exist because..

Here's one way to follow the scientific method. place the missing steps in the correct position in the process.

Drag each label to the correct location on the table. each label can be used more than once. decide whether each statement describes saturated fat, unsaturated fat, or both saturated and unsaturated fats.