Answer:
1. isotopes - neutrons
2. determine unique element - protons
3. negligible mass - electrons
4. protons - atomic number
5. arranged by atomic number - periodic table
6. neutrons and protons - atomic weight
7. variation in atomic weight - isotope
8. forms lighter elements - fission
9. forms heavier elements - fusion
Hi Tony :D
A possible explanation for what darwin observed was the birds had beaks that were adapted for feeding differently. Why he was studying the birds beaks that have been adapted for different food was because he noticed that there were birds that may have came from the same ancestor but they all had different characteristics and he soon realized it was becasue they all were adapted for each island the bird was at.<span />
The answer is a hot and tropical i hope this has helped you
Answer:
D.
Explanation:
Viruses are oftentimes short lasted and disappear quickly.
