Groundwater flows through a layer of subsurface material called an aquifer. An aquifer would MOST LIKELY be made up of which types of material A) Gravel and sand
B) Clay and silt
C) Granite and basalt
D) Marble and schist

How did alexander fleming’s research solve a societal problem? he developed ways to treat inherited diseases. he advocated for regular hand washing to kill germs. he discovered a new type of medicine that could treat infections. he discovered the cause of mad cow disease, an emerging disease.

Thyroid-stimulating hormone stimulates the thyroid gland to secrete sex hormones. true or false

Based on their relative positions in the periodic table, which two elements would have the same number of valence electrons?