Put the steps of endochondral ossification in order

Step 1
chondrocytes in the center of hyaline cartilage enlarge & form struts which begin to calcify. Then the enlarged chondrocytes die, leaving cavities in the cartilage
Step 2
Blood vessels grow around the edges of cartilage; cells in the perichondrium change to osteoblasts, producing a layer of superficial bone around the shaft which will continue to grow & become compact bone (appositional growth)
Step 3
Blood vessels enter the cartilage, bringing osteoblasts, spongy bone develops at the primary ossification center
Step 4
Remodeling creates a marrow cavity, bone replaces cartilage at the metaphyses
Step 5
Capillaries & osteoblasts enter the epiphyses, creating secondary ossification centers
Step 6
Epiphyses fill with spongy bone, cartilage remaining within the joint cavity is the articulation cartilage (Hyaline cartilage only in this phase)

Wetlands form where water and land meet. a lake with a wetland fringe can fill in with decayed plant and animal material to become a wet meadow. a pond can fill in to become a bog or fen. sediment can fill in a river marsh to become a swamp.flooding of coastal lowlands from rising sea levels has created broad coastal marshes that are protected from wave action by barrier islands or reefs. coastal wetlands also form when rivers deposit sediment as they reach the ocean. plants then take root and hold the soil firm against the forces of tides and waves.