The key evolutionary development of animals seen for the first time in sponges is that of Multicellularity. A Multicellular organism has a longer lifespan than an unicellular organism and since it has multiple cells, it can perform more functions. Sponges do not have distinct circulatory, respiratory, digestive, and excretory systems – instead the water flow system supports all these functions.

4 0

3 years ago

Read 2 more answers

1. Which biome is thought to have the greatest variety of living things? A. Tundra B. Marine C. Grassland D. Rainforest

Aleksandr [31]

Answer:

B. Marine

Explanation:

There are still things we don't know the ocean

5 0

2 years ago

The hair of sheep is sheared and processed into _____<br>correct answer will be marked as branliest