Use the given word to form a word that fits each space

1. The presence of artificial light in the night environment and its excessive use is known as light
   [ ]
   .
2. Our team is very
   [ ]
   of the current achievements as eco-helpers.
3. Habitat destruction and over-harvesting are drastically affecting the biodiversity
   [ ]
   .
4. Over 750 Greens were prevented from gathering in the main square for a massive eco
   [ ]
   .
5. Nowadays there is a big necessity for nutritional
   [ ]
   programmes.
6. Jane was very embarrassed to ask him those questions as she hadn't worked as a
   [ ]
   before.
7. Being the lead
   [ ]
   in this field, he was chosen to conduct the new valuable study.