Answer:
Osteon
Explanation:
Bone tissue may be of two types; compact bone tissue that form the outer hard covering of bones and spongy bone tissue that form inner soft portion of bone. Osteon are found in compact bone.
Osteons are cylindrical structures composed from clustre of Osteocytes and layers of extracellular matrix around a central canal connected by canaliculi for the transportation of blood. The haversian canal is surrounded by lamella that comprises the osteon. Osteons run parallel to long axis of bones and present in bones of many mammals, reptiles and birds. In some bones the stress or pressure in applied from few directions and osteons are aligned in that direction so they provide protection from bone bending or fracturing from compressive forces.
This answer would be a because
Answer:
An earthquake that isolates a population of rodents on a mountain from other populations of rodents
Explanation:
The basic characteristics of all living cells are:
-Growth and development. They have the ability to grow.
-Homeostatis. Which is the ability of the cell to maintain a stable enviroment within itself. For example, cells ability to moderate how much water they have.
-Movment either internally such as in the case of organelles moving or externally.
-Reproduction. The cell has the ability to reproduce. This happens in your skin skin at the basel layer were it is constantly producing new skin cells to replace old ones.
-Energy. Cells use energy for daily function so they need the ability to produce energy.
It's b or D I'm not sure I'm taking the test rn but I'll comment the right answer in a bit when I'm done
