These fossils are very useful for us because we can use them to date the layers of rock that they are found in. Fossils that can be used in this way are called index fossils, and rock layers with the same index fossils in them can be correlated. Not my answer, link here for full
http://peter-mulroy.squarespace.com/correlating-rock-layers/
The answer would be B. Indonesia
Metabolism is the process an organism
Because it could cause waste to build up in your body thus leading to more problems such as heart disease
B cells mature in the bone marrow or in the lymph node. Hope I could help!
