E NEL 1
43:10
Which pair of elements can be used to determine the age of a fossil that is over one billion years old?

Which traits do human embryos have that link them to a common ancestor with fish and reptiles? a. scales and tail b. gill slits and scales c. tail and gill slits d. hair and tail

Think about how you can use le chatelier’s principle to find possible solutions to the design problem. describe at least two ways to increase the yield (amount) of ammonia based on this principle.

In 2002, the rare earth elements mine in mountain pass, california was closed because