The distance of parallel is always constant as <span>it is the </span>perpendicular<span> distance from a </span>point on one line to the other line so it does not matter which point is chosen to measure the distance. While for <span>meridians t</span>he distance between poles decreases as you near the poles as the circumference of the earth is lower as you near the poles.
The distance between the meridians decreases as you near the poles because of the lowering circumference of the Earth as you near the poles. To put it in a simple way, the Earth is a rounded body, elliptical, and the meridians are stretching from north to south, as they approach the equator the Earth is wider, so the distance between them become bigger, but as they approach the poles the Earth becomes narrower and they are coming closer and closer to each other until they finally all merge into one dot on each of the two poles.
Ecosystem services are those services that t]are essential for the survival of the planet's ecosystem and these systems are necessary for the maintenance of the earth's biological systems.
These services can be grouped s the food, water regulating and disease controlling systems that support nutrient cycles and oxygen production and plus have spiritual and recreational benefits associated with them.
Natural resources are those resources that are found in natural ecosystems and these systems have various life-supporting services an example of natural resource is coal, oil deposits in rocks which provide their services to man.
The main reasons for the conversion of ecological systems by society are to protect and maintain tian these reserves for the future generations sustainably.
My personal opinion, about the conservation and preservation of the ecosystem, is that the earth has nurtured us and give us resources which we depleted due to our needs now it's up to the man who has to make sure that he doesn't destroy its carry capacity.