During the day, when the sun is shining, the ground gets warm mainly as a result

heat from earth's core being conducted to earth's surface.

convection currents in the atmosphere heating the ground.

radiated heat from the sun being absorbed by the ground.

the emission of greenhouse gases from factories and vehicles.

radiated heat from the Sun being absorbed by the ground

radiated heat fron the Sun being absorbed by the ground.

Explanation: During the day the Sun is "shining", this means that the sun is "emanating" electromagnetic waves (some in form of visible light, this is why in the day we can see a lot of light) that reach us in the Earth. Those electromagnetic waves carry with a lot of energy, and when they impact the ground, they transmit that energy in form of heat. This "transmission" of temperature is called "radiation", so the correct option is the third one; radiated heat from the Sun is absorbed by the ground.

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg