Physics
Why does the sea appear blue in colour?

Scattering of the sunlight by water molecules
Reflection of the sun light from water surface
Interference of the sun light from water surface
Refraction of the sun light

ANSWER DOWNLOAD EXAMIANS APP

Physics
The bats can fly in the dark because

They can see the objects in darkness
They generate flashes of light
They have weak legs and are likely to be attacked by predators
They generate ultrasonic sound waves

ANSWER DOWNLOAD EXAMIANS APP