Which phrase describes a sill? A. fills in valleys and rivers
B. is a hardened magma intrusion
C. cuts vertically through older rock layers
D. is built up by numerous eruptions over thousands of years

Compare and contrast the adaptations of free-living flatworms and parasitic flatworms

Will mark brainliest if correct/available! which of the following statements is true? all plants need flowers to sexually reproduce. sexually reproduced offspring are identical to their parents. fertilization always occurs inside the female's body. a body cell has twice the number of chromosomes as an egg cell.

What do all macromolecules have in common with each other? oa. they all are formed from the same elements.ob. they all have major roles in cell membranesoc. they all act as catalysts in the body.od. they all have peptide bonds between carbon atoms.