Last seen: Jul 17, 2023
Correct answer: (1) Flightless birds
(4) dorsal hollow central nervous system
Correct answer: (3) moist skin
(3) butterfly, frog and mosquito
Correct answer: (4) noncollapsible walls
Correct answer: (3) Wuchereria – Filariasis
Correct answer: (2) Echinoidea
Correct answer: (2) Rana tigrina
(4) Muscular diaphragm between thorax and abdomen
Correct answer: (3) order
(1) Both A and R are true and R is correct explanation of A
Correct answer: (1) syrinx
Correct answer: (4) sitting posture
Geothermal energy.
Charcoal.
(a) Solar cells convert solar energy into electrical energy. While charging the batteries, electrical energy is converted into chemical energy. Du...
The electricity made by the solar cells during day time is stored in rechargeable batteries so that it can be used later on, for example, at night.
This is because hot water, being lighter and less denser, rises to the top.
(a) Electrical energy produced by coal-fired plant = 2000MW = 2000 x 106W Electrical energy produced by wind turbine = 300kW = 300 x 103W No...