The element <u>Oxygen</u> is always present in a combustion reaction.
Animals have many adaptations to survive in this harsh environment; Animals need shelter and insulation in the Tundra. The animals here tend to have thicker and warmer feathers and fur. Many of them have larger bodies and shorter arms, legs and tails which helps them retain their heat better and prevent heat loss.
Answer:
Al
Explanation:
Aluminum (Al) is in the same group as Boron (B) so it should have three electrons or dots around it.
Hope that helps.
Answer is: 4)Mass
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