Sheep rearing is not done during the cold season. Why?

Tlymphocytes mature in the? a. thyroid gland. b. bone marrow. c. spleen. d. thymus.

Each pair of clay balls represents two planetesimals. if each planetesimal is composed of the same material and is separated he the same distance, which pair experiences the frayed gravitational attraction?

Awave has a wavelength of 15 mm and a frequency of 6 hertz. what is its speed?