Why: There is some evidence that omega-3 fatty acids may ease anxiety symptoms and lift your mood by lowering levels of stress chemicals such as adrenaline and cortisol in the body. Caned fatty fish, such as tuna and salmon, walnuts, and flax seeds are all great sources of omega-3 fatty acids.
As you may already know from reading How Butterflies Work or Where do butterflies get their striking colors?, butterfly wings are made of very thin layers of a hardened protein called chitin.
Bird and butterfly wings have tremendous differences, a bird's wings are made of bone, skin, and feathers whereas a butterflies wings are made of membranes stretched between h â¦ ollow tubes that protrude from the butterflies body. Instead of feathers, butterflies have colored scales covering their wings.