A block of wood weighs 102.00 g and has a volume of 120.00 cm3. What is the density of this block of wood?

Match the functions to the cell types ? contraction and relaxation. conducting electrochemical signals fighting diseases carrying genetic material

Which statement best explains why cells were observed in more detail using a compound microscope than a simple microscope? a compound microscope has greater magnification ability than a simple microscope. the compound microscope was invented before the simple microscope. a compound microscope is much easier to manufacture than a simple microscope. compound microscopes were more common than simple microscopes.

Why do the circulatory systems of land vertebrates have separate circuits to the lungs and to the rest of the body?