a region in the southern united states has seen a steady increase of the depth of its water table over the past 20 years. what does this data suggest?

a) the inhabitants of the area have learned to conserve groundwater.

b) precipitation in this area has increased over the past 20 years.

c) the groundwater is being filtered through impermeable rock faster.

d) the groundwater is being discharged faster than it is being recharged.

The groundwater is being discharged faster than it is being recharged is the data suggested.

Option D

Ground water level is the level of underground storage of water above the impermeable rock layer. The underground water is getting filtered through different layers of permeable rocks before it enters the final layer. So it’s fresh and ready to be consumed as it is taken out. Thus for centuries, it’s being used as the source of drinking water.

But with increasing population, the ground water is being consumed at the rate very faster than it can be refilled from different sources like precipitation, rivers and other water bodies. So its level tends to get lower and lower as this continues until the point it gets finished.  

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands