I am not sure but I think it's atp
Answer:The Cell Membrane. All living cells and many of the tiny organelles internal to cells are bounded by thin membranes. These membranes are composed primarily of phospholipids and proteins and are typically described as phospholipid bi-layers.
System failure is one of the more common causes.
In Texas, this region is divided into three distinct sub-regions: the High Plains, the Edwards Plateau and the Llano Basin.
For the answer to the question above, I think that Few Fossils exist from this time because the animals were all soft-bodied. Most of the animals dissolve or decompose immediately and turn to dust because they are soft-bodied.
