It's when you use something so much that it loses it's value or purpose. But it can also mean making a piece of land more profitable and productive.
Answer:
invertebrates. animal's without backbone.
verterbrates- animals with backbone
Cytoskeleton because it maintains cell's shape, secures organelles in specific positions, allows cytoplasm and vesicles to move within the cell
When I read about it, it said yeah but I'm not entirely sure
Answer:
1. Vestigial organs.
2. Homologous structures.
3. Analogous structures.