Ecosystems need producers because they are the start of the food chain.
Producers are consumed by first consumers, the second consumers and so on.
Electrons are only located in specific shells or orbitals that surround the nucleus of an atom. Therefore, I believe that your answer would be true. Hope it helped some!
Answer:
For the Numbers on the leg Photo
1. Rectus Femoris
2. Vastus lateralis
3. Tibialis Anterior
4. ADDuctor longus
5. Gracilis
6. Satorius
7. Vastus Medialis
8. Gluteus Medius
9. Gluteus Maximus
10. Semitendinosis
11. Semimembranosus
12. Biceps Femoris
13. Gastrocnemius
Explanation: is correct