Q: Q: The constant "c" can be specifically used to represent the (extremely fast) speed of what?   A:
A: light

Q: Q: What are the sporophytes in ferns?   A:
A: leafy plants

Q: Q: How did a vascular let plants grow?   A:
A: they could grow taller

Q: Q: Geysers are created when what is heated beneath the earth's surface?   A:
