Birds use the magnetic fields and some fish i believe as well and maybe butterflies im not entirely sure <span />
Answer:
The modern understanding of an atom was developed by the quantum theory
It’s c I believe because it says 209 years to complete an orbit so hint yourself ?.....
3. 9
20. 60 (1hour)
To get to 60 from 20 we multiply by three. 3 times 3 is 9.
A is true
B is true
C is true
D is true
E is false
Answer:
Lithium's mass number would decrease by 1
Explanation:
