During the fasted state proteins can be used for energy. where do these proteins come from?

Robert wants to know which fertilizer will work the best for his grass. what can he do to explore this inquiry?

How far down have geologists drilled holes ? (science) a: 3.8 km b: 12 km c: 100 m d: 1200 km

All annelids and arthropods have a blank body plan . unlike annelids, arthropods also have blank . the circulatory system of annelids is blank , while circulatory system of arthropods is blank .