Most
reptiles and all birds are oviparous, meaning that their young develop in
fertilized eggs laid outside the mother's body. In contrast, most mammals are
viviparous, meaning that their young develop inside the mother's body.
<span>
The
main difference between these two groups is that oviparous animals do not
undergo any embryonic development inside the mother whereas viviparous do.</span>
<span>a glycerol backbone, and fatty acids</span>
Antagonists muscles (e.g. biceps and triceps brachii)
Answer: when one is lost, one is formed
