Variation on Earth
The inclination of Earth on its axis while rotating around itself and the sun creates such variation in seasons. The spherical shape of the earth itself lends to interesting variation on earth. The presence of mountains and different altitudes also helps create even more variation on earth.
Variation can be with time or according to geographic location.
The concept of microclimate gives hope. It allows one to think that despite the destruction, pollution and deteriorating environment taking place globally, yet one can still live in a relative paradise and create his own microclimate and niche environment.
That does not mean that we should disconnect from what's going on around us and leave the earth to sink, as we are all connected and will get affected at the end no matter how 'isolated' we might be. It just means that in parallel with trying to "save the earth" we can still live in relative bliss by enjoying our own blessed microclimates in which we can thrive. Just planning some trees around your home can help you go that direction.
That's why an urban setting where trees are grown can be up to 10 degrees Celsius less in temperature than an adjacent one that has no trees.
The concept of microclimates also provides variation. It provides inspiration that in analogy to microclimates we can find people in urban communities who are living different states of life. The variation in such human communities can be great in a similar way that microclimates create variation. For instance, in a poor neighborhood there could exist some rich people. In an area where disease is rampant there could exist some health people. At a place where ethics have subsides there could exist ethical people. If such variation is lost, ecosystems become fragile and can fail, be destroyed and become replaced with other new ecosystems that allow for more variation and are more resilient.
This variation can perhaps explain the presence of fruits growing out of seasons for Mariam.
The concept of microclimates and variation in small areas can also be used in permaculture to provide for a variety of food in a small area of land.
So, we can find interesting variation, for instance, within Siwa itself at some scattered pieces of land that have springs.
Sea Moderates Temperature
Water from the sea absorbs a lot of heat in contrast to land which absorbs less heat. The land heats and cools very fast compared to the sea. Hence in Alexandria (Egypt) and other coastal cities weather is moderated by the waters in the sea. It can be warm at night and cool during the day.
Besides variation created by natural factors, human activity can also lead to a great deal of variation. For instance, during the Eid vacation where a large number of people who are working and living in Cairo (Egypt) go back to their governorates and industry ceases, a great positive variation in the local climates of Cairo shows up. Air pollution rates drop down sharply and the atmosphere becomes much more healthy. I have noticed during the last Eid vacation that birds increased and I believe I've even witnessed a species of bird that I had not been seeing around, it had a pleasant sound that I had not been familiar with earlier. As soon as the Eid vacation came to an end, such pleasant increased variation in species sadly subsided once again.