Answer:
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1. One reason is extinctions happen because of some kind of change in the environment where a life form lives. While some species can adapt to the changes, others die, and if enough die, the species becomes extinct. These are some of the biggest factors in the extinctions of particular species. 2. Contaminants in the environment, such as pesticides.
Answer:
Backbones
Spines
Eggs
Beaks
Explanation:
I listed a few since you didn't provide the answer list. Hopefully these are on your answer list.
Answer: What is the difference between oviparous and viviparous?
Oviparous and viviparous are such two methods. The main difference between oviparous and viviparous animals is that oviparous animals do not undergo any embryonic development inside the mother whereas viviparous animals develop into a young animal inside the mother. This means oviparous animals lay eggs.
Explanation: i hope this helps
