Activation energy is the amount of energy required to initiate a chemical reaction. The activation energy can be determined from reaction rate constants at different temperatures by the equation. ln(k 2 /k 1) = E a /R x (1/T 1 - 1/T 2).
Robins also eat other small insects, berries, fallen fruits, and especially Rosaceae fruit in the fall and winter. Robins cannot digest hard fruits or grains, so they stick to soft fruits and organisms with softer skeletons (Howell, 1942). http://www.bio.davidson.edu/people/vecas...
What do hawks eat? All raptors are carnivorous and eat only meat. Different families of raptors catch and consume a variety of prey. Accipiters such as the Cooperâs Hawk, primarily feed on birds, but also can take small mammals like cottontail rabbits and squirrels.