Which values do scientists compare when using potassium-argon dating?
o the number of stable and unstable parent atoms
o the number of non-decayed elements left in the rock
the amount of parent and daughter material trapped in the rock
o the amount of gas from the decayed material that has escaped from rock

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.

Which nucleotide component contains nitrogen

Grasses--> mice--> cats--> coyotes suppose 10,000 units of energy are available at the level of the grasses. what is the total number of energy units lost by the time energy reaches the coyote?