Answer:
The answer would be 200 million years.
Explanation:
Hope you get this right, Stay safe!
Helium is a gas composed of itself, were air is composed of Oxygen and Nitrogen making the air more dense than the helium making it float to find other gases
Two factors to change are Air pressure (due to the balloon moving ) and the helium making the balloon rise.
That's about all I can explain...hope this helps >.<
Answer: Marsha specialize in cooking cakes, Howard specializes in cooking pizza.
In this case, Marsha can cook 5 cakes/hr but Howard is 3 cakes/hr. That means Marsha can cook cakes 1.6 times faster than Howard.
In cooking pizza, Howard can cook 12 pizzas/hr and Marsha only 10 pizzas/hr. That means Howard cook pizza 1.2 times faster than Marsha.
The first three elements in the periodic table are:
- Hydrogen (H)
- Helium (He)
- Lithium (Li)
:)
