When waves act together, you talk about "interference".
When they reinforce each other, it is "constructive interference".
When they cancel each other, it is "destructive interference".
Two hydrogen and two oxygen multiply for two
You have to do a report :

So
the truck efficiency is 38%.
Changes to genes can affect the phenotypic traits of an organism, making them look differently.
Answer:
Mass of one electron is 9.1 × 10⁻³¹ kg
Mass of one proton is 1.673 × 10⁻²⁷ Kg
Mass of one neutron is 1.675 × 10⁻²⁷ Kg
<u>-TheUnknownScientist</u><u> 72</u>