How does a savanna differ from a grassland?
a. Savannas have a large number of grazing animals, while grasslands do not.
b. Savannas have shrubs and isolated trees, while grasslands contain grasses, flo
c. Grasslands have burrowing animals, while savannas do not.
d. Savannas are regulated by fires, while grasslands are not.
Please select the best answer from the choices provided
O
A

First answer marked as brainiest which is the correct equation describing the first law of thermodynamics? a) when the internal energy of a system changes, it equals the amount of heat added plus the work done. b) when work is done by the piston, it is equal to the heat added plus the change in internal energy of the system. c) when heat is added to the system, it is equal to the amount of work done by the piston plus the change in internal energy of the system.