Which is the first vertebea that the spinal cord pass through ?

Compare and contrast nutrient limitation in soil vs. nutrient limitation in aquatic ecosystems

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?

What can happen to an enzyme as tempature rises