It's where Charles wrote his book
Sexual intercourse. The developing of the female egg cells and the production of sperm cells
Climate variations are averaged by using weather conditions from past years. Climate variability varies by seasons, because some seasons get colder than others, and there could be more precipitation in the atmosphere, which would then make it easier to calculate future rainfall, making people aware of storms that are coming ahead of time and allowing them to prepare for it (making storm water drains, etc.).
The major organ that you would find in the lymphatic system would be the spleen.