In your textbook, read about the urinary system and homeostasis. Complete each statement. 11. __________________________ and __________________________ are two toxic nitrogenous wastesthat your kidneys constantly remove from your bloodstream. 12.The kidneys also help regulate the bloodâs ________________________ ________________________ ,and __________________________. 13.n your textbook, read about the urinary system and homeostasis. Complete each statement. 11. __________________________ and __________________________ are two toxic nitrogenous wastesthat your kidneys constantly remove from your bloodstream. 12.
The last eruption of this stratovolcano occurred in March 1944. A stratovolcano, also known as a composite volcano, is a conical volcano built up by many layers (strata) of hardened lava, tephra, pumice, and volcanic ash. Unlike shield volcanoes, stratovolcanoes are characterized by a steep profile and periodic explosive eruptions and effusive eruptions, although some have collapsed craters called calderas.
Geologists call Mount St. Helens a composite volcano (or stratovolcano), a term for steepsided, often symmetrical cones constructed of alternating layers of lava flows, ash, and other volcanic debris. Composite volcanoes tend to erupt explosively and pose considerable danger to nearby life and property.