Which is not a characteristic of life?

a. composed of cells
b. maintains homeostasis
c. sensitivity
d. uses energy

Which of the following choices is not an effective solution to the energy waste related to inefficient lighting? a. using low-pressure sodium lighting sources b. pointing lights on billboards and street signs upward c. placing light sources on time controls d. shielding light to direct it downward

Which layer will become saturated first when rain falls?

Drag each tile to the correct box. arrange the layers and faults from oldest to youngest.