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
Explanation:
The desert and tundra are alike because they both have limited available water.
1. B blood type that is a multiple allele trait
2. A height from short to tall that is a polygenic trait
Answer: c. Part of an ecosystem
Explanation: the fish, crustaceans, molluscs and bacteria are part of a community, but sand is not. Each of those species is part of a population.