In contrast to their grazing, scavenging, and filter-feeding cousins, squid are molluscs that have evolved for a life of active hunting in
the open ocean. Describe TWO external and TWO internal
adaptations that cephalopods have (but gastropods and bivalves
lack) that are specifically for this predatory, open water lifestyle.

the animal that would be cutest if scaled down to the size of a cat? elephant

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.