10. a(n) sequence can be compared between two different organisms to determine their relationship. 11. a structure that had a function in the past like the wings of an ostrich but do not have a function now are called

The answer to the 1st question is a DNA base sequence.  This is done through observing amino acid sequence, the more recent the common ancestor is, the more closely related the species are.

The answer to the 2nd question is vestigial.  The wings of the ostrich became functionless in the course of evolution. The wings atrophied that it can no longer be used for flying.

1. when the tempature rises,your sweat glands and then springs into action making perspiration. some sweat evaporates with your skin taling heat with it.2.some of the blood pumped by the heart travels by your lungs to get rid of carbon dioxide and pick up oxygen.3.saliva produces by, you drinking water which saliva is 98% of. when mucus builds up in your body it also creates saliva as well as, antibacterial compunds.4.when the core body tempature drops, the shivering reflex is triggered to maintain homeostasis. for example: when you get out the pool you start to shiver because it is cold.