It’s D because the other ones don’t really make sense
Hello, hope this helps
Answer:
D. Aqueducts
Explanation:
They constructed these to bring water to many services such as public baths and latrines. Let me know if have any questions about this.
Answer:
the element must be in the fifth, sixth, or seventh energy shells.
Explanation:
Because the first ionization energy is less than calcium's, the element must be larger and in the next energy shell. Calcium is in the fourth energy shell, so the element must be in the fifth, sixth, or seventh energy shells.
Answer:
46, 39, 32
Explanation:
you just have to subtract 7 each time :)
