Answer:
Sources of study of interior of earth:
Deep ocean drilling reveals humongous information through analysis of materials collected at different depth.
Volcanic eruption deliver information by the means of molten magma that comes out of Earth’s interiors.
Surface rocks are readily available earth material.
Mutations can create entirely new alleles in a population which changes the allele frequencies of a gene pool.
active transport
Explanation:
it involves movement of ions
