The climate in the winter is very cold. The Temperature may reach -40 degrees Fahrenheit. Summers are cool with temperatures of 37 degrees to 54 degrees Fahrenheit. Precipitation is only 6 to 10 inches per year including melted snow.
It is (D) it is useful only when an antigen invades a body for the second time
The answer is C
Because the sun Shines only on the equator which is the law of conversion of energy
The answer is d. Hope it help
