3:00 -7:00 PM
This is the span of the time wherein most commuters travel and industrial factories produce emissions.
b) some bacteria reduce nitrate ion
I think it’s A. hope this helps
I do not believe so because it is genetic, just you can't forever change a feature without plastic surgery or an accident, etc.
Carbon (C) is an element
Carbon Dioxide (CO2) is a compound
Hydrogen (H) is an element
Sodium Chloride (NaCl) is a compound
A good way to tell whether something is a compound or an element, is that in a compound there is a mixture of different elements. Like in Carbon Dioxide, the symbol is CO2. This shows the carbon (C) and oxygen (O) together. I hope i worded that well enough and this helps :)