Question

5. When the men opened the treasure chests, they were surprised because the ches
were full of gold ornaments, pearls and doubloons.
b. were teeming with lizards, newts, frogs, salamanders and water snakes.
were packed with trout, bearded barbell and salmons.
d. were packed with clay and sand.
C.
Answer:
b​

Answer 1

Answer:

The ozone layer is found in the lower portion of the earth’s atmosphere. It has the potential to absorb around 97-99% of the harmful ultraviolet radiations coming from the sun that can damage life on earth. If the ozone layer was absent, millions of people would develop skin diseases and may have weakened immune systems.

However, scientists have discovered a hole in the ozone layer over the Antarctic. This has focussed their concern on various environmental issues and steps to control them. The main reasons for the ozone hole are chlorofluorocarbons, carbon tetrachloride, methyl bromide and hydrochlorofluorocarbons.