Hello!
Ions are charged particles, that explains why they have either a positive or negative charge. Since electrical signals contain charges, that also explains why they are often based on ions. Your answer would be D!
You can feel free to let me know if you have any questions regarding this!
Thanks!
- TetraFish
I'm not sure about the first two but I think the one about the halite crystal is cubic. :)
Answer:
lichens and bryophytes[secondary seccession]
Explanation:
after the wildfire, the area would bee too dry and therfore it'll lead to a xerarch succession. lichens and bryophytes would be the climax communities.
