You have to use a Fire and Water Dragon
Breed a mud dragon and an air dragon. It worked for me first time. It will help if you get both dragons to lvl 10.
Earth and Lava. To be exact. And it is a bone dragon. Not a Skeleton dragon
breed an air with any thing that is breed with earth like mud (water+earth) add me crazy john45 ill give you 3750 gems if you give me gems each day for half a year
The most effective method of breeding a sandstorm dragon is an air dragon (lv 10 left) and a moss dragon (lv 10 right). This has about a 17% success rate. The egg is purple with grey diamonds, and has a 2 hour incubation time. The sandstorm dragon may also be purchased in the market for 1,000 gems.
The lightning dragon is a base element dragon. You have to purchase your first one. It is available in the market for 75,000 coins, and it takes 30 minutes to hatch. The egg is pale purple with a turquoise lightning bolt. After you have your first lightning dragon, you can breed them using other lightning hybrids. The most effective method is to use blazing (lv 10 left) and fog (lv 10 right). This has about a 15% success rate.
To release air from a tire without using a tool, simply press on the valve stem with your finger to open it and allow the air to escape.
Breed a Metal dragon and an air dragon, if you don't have an air dragon breed a fire and water dragon.
aerobic respiration, without air it's anaerobic.
Breed air and and grass you breed grass and air 8hrs incubation You have to do Grass and Flying and if you don't have flying you have to do water and fire but if you don't have water you have to wait and buy it.
Your breath can be held without touching it, by using your lungs to control the intake and release of air.
To put air in a tire without using a gauge, you can visually inspect the tire to see if it looks low on air, then use a manual pump to add air until it looks properly inflated.
The most effective method is breeding a fire dragon (level 10 left) and a water dragon (level 10 right). This has about a 98% success rate. The egg is light purple with light blue swirls. It takes 2 hours to hatch. It may also be purchased in the market for 500 gems. Please refer to the related link for more information on Dragon Breeding in DragonVale.