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:
B and D? or the second and fourth ones
Explanation:
The answer is Carbon Dioxide
Energy is released when a chemical bond forms between two identical atoms
A.seeds because if the seed gets into the ground with water and sunlight then it can grow
