Awarning sign of the female athlete triad includes:

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 of the following is an oxidation-reduction reaction? (pictured below)

Coquina, a type of limestone, forms from shell fragments that settle on the ocean floor. what type of rock is coquina?