Informal labor is part of every county’s economy

Explanation:

Yes, this is true.

Some examples of informal labour include:

-street food and street vendors

-babysitting

-tutoring peers for money

-private language classes.

Many of these activities are never registered with the tax office and never taxed, but they're a part of the economy.

i do believe that its called,(the segovia highlands); plz check first good luck;

answer; (d) melting of sea ice;