Words from definitions Crossword

Having or showing a strong desire and determination to succeed
A material/ object which allows light to pass through so that objects behind it can be seen
A division or a branch of a company
To pay no attention too
To get involved in an argument to bring about agreement
Someone who competes against another person in a competition
For something to progressively get worse
A journey taken by a group of people with a certain purpose such as research or exploration
To improve the quality of something
A person who puts a case or issue forward on someone else’s behalf