I would have to say the answer is C.
A is incorrect since hydrogen is not an air pollutant.
B is incorrect because ozone is most definitely one of the top.
And D has cyanide which is a chemical for suicide during wars.
Hope this helps!
False because that question is defying a condition of high blood pressure. Really hope I helped you <3
Every cell in your body has the same genes/DNA but, the gene expression process decides which genes are active in which cells which is how each cell type gets it properties.
In my home, we have our own way to deal with tornadoes. If there is ever a tornado warning or watch, we head down to our basement and huddle up against a corner. We also have emergency kits that include food, water, flashlights, and other essentials that might be needed. By doing this, my family and I are being safe and prepared for any disaster that strikes.
