Answer:
The heating element of the heater is made up of alloy which has very high resistance so when current flows through the heating element, it becomes too hot and glows red. But the resistance of cord which is usually of copper or aluminum is very low so it does not glow.
Answer:
Sometimes
Explanation:
Sometimes meaning in occasions. If it is a "vampire star" not likely because they also cause they also make novas happen by sucking the gas from another star.
The arrow in chemical equation means 'turns into' i think
the answer is D) The air in the aquarium is saturated
none of the other answers were realistic AND I took this before so I know the right answer.