Why do athletes' bodies conduct less anaerobic respiration than those of untrained people?

They both determine the exact age of rocks.

It should be cryosphere and hydrosphere

Nucleus is the organelle that contains chromosomes

In some developing nations the percentage of the animal protein from fish in the diet can be as high as 25 percent.  about 85% of fish caught is used for human consumption.  the remainder is converted into fishmeal and fish oil.