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 eat different types of food depending not only on the time of year, but even time of day. They eat earthworms early in the day and more fruit later in the day. Because they forage largely on lawns, they are vulnerable to pesticide poisoning and can be an important indicator of chemical pollution.
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.