Question

Q8 GIVE REASONS 1. RAW VEGETABLES AND FRUITS ARE KEPT IN REFRIGERATORS WHEREAS JAMS AND PICKLES CAN BE KEPT OUTSIDE . 2. SOME SOIL MICROBES ARE CALLED AS BIOLOGICAL CLEANERS. 3. MOSQUITOES CAN BE CONTROLLED BY PREVENTING STAGNATION OF WATER THOUGH THEY DO NOT LIVE IN WATER

Answer 1

1) Raw veggies and fruits as the name implies, they're raw, not mixed with any ingredients, so naturally all of it will be rotten and infected. But in a low temperature they can be protected.. But the pickles and jams have a lot of preservatives (artificial) that prevents their damage.

2) Certain microbes are called bio cleaners because, they nullify the toxins that gets added up to the soil bcoz of garbage and sewage that we create!

3) Mosquitoes lay eggs. To lay eggs (to breed) they require stagnant water. So when we dispose stagnant water, the eggs are eliminated!