Eutrophication might happen in a lake if it had excess nutrients.
it was completely filled with soil.
None of the answers is correct
it was full with fish.

Analogy- 1 is to arete as 5 is to cirque horn glacial valley hanging valley

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water

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?