Which statement about cell division is true?
a. a cell divides once during meiosis and twice during mitosis.
b. a cell divides once during mitosis and twice during meiosis.
c. a cell divides once during mitosis, but it does not divide during meiosis.
d. a cell divides once during meiosis, but it does not divide during mitosis.

Um vetor representa um deslocamento cujo módulo é 20 m. se v faz um ângulo de 60 graus com a horizontal, qual é o valor das componentes horizontal e vertical deste vetor?

Energy flows from the producer level to the level. is called

Refrigerant-134a flows through a carnot heat pump cycle at 0.5 kg/s. it is known that the maximum absolute temperature in the cycle is 1.1 times the minimum absolute temperature, and the net power input to the cycle is 2.5 kw. if the refrigerant changes from a saturated vapor to a saturated liquid during the heat rejection process, determine the maximum magnitude of the enthalpy of vaporization for this process in kj/kg (with 3 significant figures).