Answer:
I believe it's D
Explanation:
they both are worked a lot and it makes the most sense.
1. Decreases by 4. (B)
2. The atomic number changes. (B)
3. 56/26 Fe. (C)
4. Potassium-40;t1/2=25 days. (B)
5. Takes place in the upper atmosphere. (A)
Answer:
A
Explanation:
Same air has special carakteristik features
Chicken eggs are used as host and this can be a problem for people with egg allergies!!