Based on the population pyramid, which has the lowest cohort (group) of people? O 35-39
O 0-4
O 20-24
O 80-84

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

Why is excretion necessary to maintain homeostasis?

How are gross production and net production different? a. net production is always greater than gross production. b. net production is always less than gross production. only animals have net production. d. only plants have net production. select the best answer from the choices provided