Answer:
typically, the development of it's economy, and the develoment (life expectancy, wellbeing, etc.) of its population. (human develo pment index)
Coral reefs provide an important ecosystem for life underwater, protect coastal areas by reducing the power of waves hitting the coast, and provide a crucial source of income for millions of people. Coral reefs teem with diverse life. Thousands of species can be found living on one reef.
The correct matches are:
Summer - C
Fall - D
Spring - B
Winter - A
The season on the Earth in the mid latitudes are directly dependent on the Earth's revolution and its tilting. Specifically for the Northern Hemisphere, when the Northern Hemisphere is tilted towards the Sun than it is summer on it because it gets more solar radiation. As the Earth continues its revolution it starts to tilt away the Northern Hemisphere, resulting in a drop in temperature, thus having autumn. When the Earth reaches a point where the Northern Hemisphere is tilted away from the Sun than it is winter because it receives less solar radiation. After that point, the Earth starts to slowly tilt the Northern Hemisphere towards the Sun again, thus having spring.