Answer:
B) Identifying the minerals within it
Explanation:
Geologists commonly use radiometric dating methods, based on the natural radioactive decay of certain elements such as potassium and carbon, as reliable clocks to date the age of rock layers.
Answer:
eukaryotic
Both plant and animal cells are eukaryotic, so they contain membrane-bound organelles like the nucleus and mitochondria
686.8 j is needed to burn 4.24 grans of pd.
Answer:
c 1
b2
a3
Explanation:
There are gaps in the fossil record because many early forms of life were soft-bodied, which means that they have left few traces behind. What traces there were may have been destroyed by geological activity. This is why scientists cannot be certain about how life began.
