What mechanical layer sits on top of the asthenosphere ?

Which best example best demonstrates the importance of having knowledge of evolutionary relationships? a. illustration of a plant b.organ transplantation between species c. blood donation from a human d. do you need sequence of an insect.

Gram-negative bacteria have a cell wall that is! and does not accept the stain, making itappear

How do all types of diffusion/passive transport actually ‘work’ without using even the smallest amount of cellular energy?