Hello! I Need help with this. Please Help Make Sure you explain your answer i will be marking brainliest to the first person who has the right answer.:D

What type of competition exsist between two species. turtles and fish

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

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?