Answer:
A)11,460 years
Explanation:half of a radioactive element represent the time take for half of it's components to dissociate or disintegrate.
For carbonn14 that undergo an emmision to form a stable carbon 14,it moves thus
14C(1 part) ______14C(0.5 parts)_____14C(0.25parts)
i.e it undergo two radioactive decay which means two half lives .
Since each half life is 5780 years ,the age will be 2×half lives= 2×5780=11,460 years
all of the above can be considered ecosystems
Answer:
Its supposed to be Mercury but earth too so id go for Earth "i hope this helps"
sorry if its wrong
the answer is... hydrocarbons
Its d the cell wall. The plant cell contains a cell wall that is absent in a animal cell.
