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The answer to this question is probably B. They were not limited to growing under water and could therefore spread in land. Gymnosperms are plants that produce seeds that are not carried in the ovary or fruit. Their seeds do not have an outer covering or shell. The Gymnosperms are believed to be the first plants to have seeds.
Welp they both had two great oceans between them, a land invasion is near Impossible, and a sea attack would not be smart for the Central Powers/Axis
An Air attack needs refueling and no enemy had a close airbase plus we had anti air any attack on North America or any of the Americas is useless.
Here you go my friend . Earth's crust is made up of rock. It is technically the first layer out 4 layers within the earth. The ocean is basically like a blanket above the crust. Our ocean's waters rest on the crust. Doesn't matter how large or how heavy the water is, our crust holds our water.
