When air is heated up the molecules spread out and move faster, so heat rises because it is less dense than the cooler air around it.
Answer:
Wings
Explanation:
The most unique feature among phylum Arthropoda is that some of its members have wings. No other invertebrate has winged species!
Earth’s axis passes through the North and South Poles. It takes Earth 24 hours to rotate once around its axis. Earth revolves once around the Sun in 365 days during a non-leap year.
Its C. Whenever you perform an experiment you want to make sure its as controled as it can possibly be.
