What is the major limiting factor to the numbers of producers at great depths in the ocean? A. Type of seafloor
B. Amount of sunlight
C. Variety of consumers
D. Availability of minerals

In general, are there any major differences that you can see? explain

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?

If people from georgia have just experienced an extremely cold winter the last couple of months, what would the climate most likely be classified as? polar temperate maritime tropical