Answer: Fossils and relative dating
Explanation: Land and rock experts have studied the order in which (things in rocks that lived a long time ago/old, outdated things) appeared and disappeared through time and rocks. This study is called biostratigraphy.
Answer:
BY THE WAY IN MATERIALS ARE USED
IN IT'S TIME OF CONVINIANCE
Answer: Foods with calcium
The amount of bone tissue in the skeleton or bone mass can keep growing until the age of 30. It is recommended to eat food with calcium prior to this age for maximum strength and density of the bones. Examples of food rich in calcium are dairy foods, green leafy vegetables, beans, nuts, fish and a lot more.
Answer:
in the nucleus of eukaryotic organisms
