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:
A manipulated variable is the independent variable in an experiment. It's called “manipulated” because it's the one you can change. In other words, you can decide ahead of time to increase it or decrease it. In an experiment you should only have one manipulated variable at a time. Brainly me this is correct hope this helps! <3
Explanation:
Despite the fact that the female lays the eggs and the young develop outside her body, since the sperm and the egg combine inside the female, internal fertilization takes place.
I hope this helps you! (:
Answer:
I would say plenty of water.