Протоит 2. Explain why we need to protect and conserve the following: tropical rainforest,
coral reefs and mangrove swamps of the Philippines.
tropical rainforest:
coral reefs:
mangrove swamps:​

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.

on passing the small ampere of electric current through the tube made of ar and hg of cfl generates uv rays which excites the fluorescent and thus emits the high radiation by consumption of just 5- 12 w in comparison to incandescent light which requires more power such as around 40 - 55 w to lighten.

moreover the life span of fluorescent or cfl is around 8000 h whereas the life span of incandescent is around 1200 h

hence, the building installed with incandescent lights bears more electricity bill.