Answer:
First choice: 2
Explanation:
There are 2 phosphorous (P) in the substance.
Ignore the strontium (Sr3) part because you are looking to isolate the P from (PO4)2.
Break the chemical equation apart to get 1 Phosphorous atom, and 4 Oxygen atoms.
Now, multiple 1 by 2 because that are 2 phosphate to get 2 phosphorous atoms.
The two major water features of the tundra biome are nitrogen and phosphorus. Do you understand now?
2. B because it has a lower activation energy.
idk because you have no picture with the lines on it
1.77 so A. I don’t need to explain this just helping out haha
A rain gauge a (clear) tube or cup with inches marked and set outside when raining and see how much rain there is
