1) What mineral cleaves in two directions and can be scratched by olivine (1) fluorite
(2) potassium feldspar
(3) quartz
(4) pyrite

2) Which group contains only minerals?

(1) pyroxene and limestone
(2) hematite and quartzite
(3) fluorite and coal
(4) halite and olivine

Monitor and apply fix up strategies

How do living things obtain phosphorus

45 points how are people today being protected from tsunamis? earthquake data is analyzed to detemrine if a tsunami is likely, and if so, warnings are sent out. areas in tsunami risk zones are no longer heavily populated. radar is used to measure wave heights regularly. meteorologists study the winds to determine if wave heights will be large.