The minimum hydrogen to helium ratio is 3:1
Answer:
hi there!
Explanation:
• Variation light and variation in temperatura
For me these are the problem, because they had to move some plant to the outdoors, because they don´t have enough space inside. So this changed of place could affect the plants.
Hey the answer to this question is Covalent bond.
A. a decrease in Oxygen
This is because trees take is Carbon Dioxide and they give off Oxygen. The more that trees are cut down the less oxygen we get.
During summertime in the Northern Hemisphere, Earth is tilted so that the Northern Hemisphere is angled more directly at the sun. It receives more direct sunlight and is warmer.