Question

A result of global warming is that the ice of some glaciers is melting. Twelve years after the ice disappears, tiny plants, called lichen, start to grow on the rocks. Each lichen grows approximately in the shape of a circle. The relationship between the diameter of this circle and the age of the lichen can be approximated
with the formula:$d=7.0X \sqrt{(t-12)} for t \geq 12$ where d represents the diameter of the lichen in millimetres, and t represents the number of years after the ice has disappeared.
Q1.Using the formula, calculate the diameter of the lichen, 16 years after the ice
disappeared.
Q2.An measured the diameter of some lichen and found it was 35 millimetres.
How many years ago did the ice disappear at this spot?
Q3. The relationship between the diameter of this circle and the age of the lichen can be approximated
with the formula?
Q.4.How is the reason behind depletion of polar ice?
Q5.Which phenomenon related to the disappearance of ice ?

Answer 1

Step-by-step explanation:

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Answer 2

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