Answer: K and Mg
Explanation:
The first one refers to the atomic radius and increases going down and to the left on the periodic table. K is in between Rb and Na.
A semiconductor's resistivity decreases with the increase in temperature.
More is the heat imparted to it, it will behave more as an insulator.
1 calorie is equal to 4.184 Joules.
Answer:it will shake up more
Explanation:the mass of it falling and means when open it will explode
b, the sunlight decreases because the sun is tilted on an axis and towards the fall and winter times, it gets shorter