Why are skeletal remains present long after death? It takes a long time for the large number of cells to break down.
O Osteoblasts are the first cells to die when blood stops circulating.
O Mineralization of salts forms a hard, tightly packed matrix.
O Bones are covered with an impermeable membrane.

answer: 2

explanation:

yes

label a cell membrane

label b cytoplasm

label c ribosomes

label d dna

the membrane forms the outside of the cell

cytoplasm is the liquid within

ribosomes are the components within that distribute rna

the dna is the genetic make-up

1. efficient use of space

2. elimination of groundwater contamination

3. energy generation

4. lower carbon footprint