state the stages in the evolution of animals
Answers
Answer:
The earliest animals evolved from colonial protists more than 600 million years ago. Many important animal adaptations evolved in invertebrates, including tissues and a brain. The first animals to live on land were invertebrates. Amphibians were the first vertebrates to live on land.
Explanation:
Major developments that occurred within the animal kingdom include bilateral symmetry, true tissue and organ systems, a body cavity, a centralized nervous system, a complete digestive system, a segmented body plan, and a notochord
Answer:
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