Answer: Igneous rock forms between sedimentary layers.
This can definitely help in determining relative age because sedimentary rocks will be the older rock than igneous rock as igneous rock has formed between sedimentary rocks
The amount of uranium within nuclear fuel rods is enough to sustain a chain reaction but is less than the critical mass necessary for the reaction to become explosive.
Answer:Biodiversity. The variety of organisms in a given area. Succession. The replacement of one community by another at a single place over a period of time. Pioneer Species.