This figure from Knörnschild et al. (2012) indicates what phenomenon about bat echolocation in Saccopteryx bilineata (Greater sac winged bat)?

(A) Nycteris is a carnivorous bat that ‘gleans’ prey such as frogs and lizards from the ground.  (B) Plecotus, the long-eared bat specializes on non-flying prey from leaves on trees.   (C) The Mexican free-tailed bat, Tararida forages insects high above the canopy. (D) Some species of Eptesicus, the big brown bat, forage for insects in small open clearings. For the four bat genera described above, describe a “typical” echolocation pattern for each bat in terms of where they forage and explain why they use the particular echolocation pattern for their foraging bouts.

Gray whales echolocate at frequencies up to 200kHZ in the water.  The distance between their ears is about 9m.  A sound made at 20Hz produces a wavelength of what in water?  Would gray whales be able to localize this sound using intensity cues, phase differences or neither?  (Remember that speed of sound in water is 1350m/s).

What is social work?

What is the concept of privilege?

The working poor refers to individuals who are employed but still live below the poverty line due to low wages and unstable work conditions. (True/False)

Seasonal fresh produce should be included in menus whenever possible to reduce cost, improve nutritional value, and expose children to new food items.

Daily health checks can be a valuable method for involving families in children’s preventive health care.

You can determine if a food is unsafe to eat by smelling or tasting it.

Most food-borne illness outbreaks can be traced to fast food meals or processed foods sold in retail stores.