Answer:
a level
Explanation:
it determines if its flat
The heart is located underneath the sternum in a thoracic compartment called the mediastinum, which occupies the space between the lungs
Answer: a cell wall
Explanation: a cell wall is a barrier that protects the plant cell. Animal cells do not need this becuase they have a cell membrane which also protects the cell.
THe base of the pyramid is built from organisms that primarily
A) are autotrophs.