How do lions obtain the carbon they need?

What causes the force that pushes magma from the magma chamber through the pipe and vent of a volcano?

If two parents who's blood types are both b produce a child that has blood type o, what can you say about the parent's genotybes? oa) one is ii ob) one is ibi oc) both are bi od) nothing, this is impossible

Why did adult crab numbers decline in he ecosystem, even though sea stars were still available?