What would a stable pond ecosystem not contain

Use the distance formula to determine weather each pair of segments have the same length

Ihave no idea how to solve these. plus there's another question that is 2) a 10 kilogram meteorite is collected in space and brought back to earth. it is composed of 1.25 kg of uranium-238 and 8.75 kg of lead-206. how many u-238 half lives have passed? what is the approximate age of the meteorite?

Some of the money that people deposit into a bank eventually becomes a interjection into the economy when the bank