Answer:
Explanation:
1- closely packed osteons or haversian systems, used to provide strength and protection to bones.
2- Spongy bone consists of plates (trabeculae) and bars of bone adjacent to small, irregular cavities that contain red bone marrow. provides balance to the dense and heavy compact bone by making bones lighter so that muscles can move them more easily.
Answer:
D. X is eukaryotic and Y is prokaryotic
food chain. it tells how different organism feed on in a linear way. if we mix more than 2 food chains it will become food web.
Answer:
fatality rate that is 23 times as high than for all regular workers
