An aquifer has been compared to a sponge. think about this analogy for a moment explain why the use of the word quotations “sponge“ is more appropriate in the use of “underground river” quotes to describe aquifers.

The word sponge is more appropriate to use than Underground river since an underground river can loose water while an aquifer cannot loose water, unless it is open-air and above ground. then the aquifer would slowly loose water due to evaporation from the sun.

image result for describe the various types of gene mutationsghr.nlm.nih.gov

the types of mutations include: missense mutation: this type of mutation is a change in one dna base pair that results in the substitution of one amino acid for another in the protein made by a gene. nonsense mutation: a nonsense mutation is also a change in one dna base pair.

explanation:

answer; ///(b) it is composed of four protein chains and four heme groups;