What is the central idea of the passage tree of life

it was used to explore evolution and to describe the relationship between organisms,both living and non- living

The tree is abundantly covered in green leaves. Due to its age and the fact that it is the only major tree growing in the area, the tree is a local tourist attraction and is visited by approximately 65,000 people every year. The yellow resin is used to make candles, aromatics and gum; the beans are processed into meal, jam, and wine.[2]

It is not certain how the tree survives. Bahrain has little to no rain throughout the year. Its roots are 50 meters deep, which may be enough to reach the water.[2] Others say the tree has learned to extract moisture from grains of sand. Some claim that the tree is standing in what was once the Garden of Eden, and so has a more mystical source of water..

i'm pretty sure i had this question the other day and b was the right answer.

the cost of attendance or coa is an approximate budget for the cost of attendance of the whole academic year. in order to calculate this, universities take into consideration many factors like room and board, tuitions and fees, books, transportation and personal expenses such as medicine, laundry, clothing. all these factors combined make up the final sum to the cost of attendance in each university.