Answer: Layer a is 500 million years old.
Explanation:
Trilobite is a member of the group of extinct arthropods found as fossils and they can be identified by the three-lobed as well as three segmented forms. These were the marine animals. These were appeared initially in the Cambrian Period. They used to live 542 million years ago so the fossils can be estimated to be aged of 500 above years old. These animals used to dominate in the sea area.
You could argue with the fact that a common worker was allowed their own burial tomb. Back in ancient Egypt few were rich enough to have a Tomb built. Also the tomb seams to be a graveyard, which implies that this is a place specifically designated for the dead, which were usually not tombs but in places closer to town.
sus pricipales factores limitantes son la disponibilidad de luz solar y la concentración de oxígeno disuelto y nutrientes en el agua
Answer:
The correct answer is: c) 3, 2, 5, 1, 4.
Explanation:
Endochondral ossification is the process in which <u>bone tissue is formed from a cartilage model</u>, unlike intramembranous ossification in which bone cells originate from mesenchymal stem cells. Endochondral ossification is key to: 1) the rudimentary formation of long bones, 2) the growth in lenght of long bones, and 3) the reparation if bone tissue when the bone is fractured.
