Question
Question: Which one forms coal?...
Which one forms coal?
A
Fern + Cycas
B
Fern + Cycadofilicales or pteridospermales
C
Ginkgo + Cedrus
D
Cycas + Pinus
Answer
Fern + Cycas
Which one forms coal?
Fern + Cycas
Fern + Cycadofilicales or pteridospermales
Ginkgo + Cedrus
Cycas + Pinus
Fern + Cycas