Job Roles

X= 2/3Y 

=> Y= 3/2X

Aage of X after 6 years = 46 years

So present age of X = 46-6 = 40 years

Now, present age of Y = 3/2 * 40 = 60 years.

Renewable energy is energy that is collected from renewable resources, which are naturally replenished on a human timescale, such as sunlight, wind, rain, tides, waves, and geothermal heat.

The supply curve slopes upward because for reflecting the higher price needed to cover the higher marginal cost of production. 

A computer program is a set of instructions i.e algorithm that are to be executed to complete a task.

A red flag with a diagonal white stripe indicates scuba diving.

And the alpha flag indicates that there is a diver inside.

SCUBA means Self Contained Underwater Breathing Apparatus.

Protists are eukaryotic organisms that cannot be classified as a plant, animal, or fungus. They are mostly unicellular, but some, like algae, are multicellular.

Kelp, or 'seaweed,' is a large multicellular protist that provides food, shelter, and oxygen for numerous underwater ecosystems.

Envelope is a letter holder for one letter and in the question it mean that it holds one letter. Eye is also a word which starts and end with E but has one letter in the middle.