Questions
1
The presence of _________ in a water body is an indicator of water pollution.
Answer:E.Coli
2
Eggshells of birds become unusually thin when exposed to the pesticides in their environment. The protein that gets affected is ________
Answer:Calmodulin
4
A moth having a speckled wing, able to blend into its background due to its dark colouration is called
Answer:Industrial melanism
5
Carbon dioxide is primarily called a greenhouse gas because
Answer: Traps heat
6
Trichoderma harzianum is a ________ that is predominantly used as a fungicide
Answer:Fungus
7
Greenhouse gases are those that absorb and emit infrared radiation. Examples inlude__________
Answer:Ozone
8
Depletion of the ozone layer is damaging to human health. Negative effects include
Answer:Skin cancers
9
__________ is an organism used to gauge the quality of an ecosystem.
Answer:Bioindicator
10
_________ is a waste disposal method where solid organic wastes are converted to the residue and gaseous products through combustion.
Answer: Incineration
12
The green house gases, otherwise called radioactively active gases includes
Answer:All of these
14
A high Biological Oxygen Demand (BOD) indicates that:
Answer: High level of microbial pollution
16
The range of normal human hearing is in the range of
Answer: 50Hz to 15000 Hz
17
The pollution which does not persistent harm to life supporting system is
Answer:Noise pollution
18
Soap and detergents are the source of organic pollutants like:
Answer: all of these
19
Growing agricultural crops between rows of planted trees is known as
Answer: Taungya system
