A woman is most likely to get pregnant if she has unprotected sex a few days before and on the day of ovulation, when the egg is released from the ovaries. The release of the egg is hormonally stimulated, meaning that a hormone in the womans body triggers ovulation. On average, women ovulate around the 14th day of their menstrual cycle. The following is a graph showing the levels of three hormones throughout the menstrual cycle of an average woman.Based on the graph, which hormone is most directly responsible for triggering ovulation?
Through friction, energy of motion is converted to heat. You use this in your favor when you
The boiling point of water decreases with increasing pressure. At high altitudes, the atmospheric pressure is lower than at sea level. Where would you expect to find the highest boiling point temperature of water?
As the pressure of a gas increases at constant temperature, the volume of the gas decreases.If you were a diver and you wanted to take an oxygen tank with you, what would you do?
The amount of solute that can be dissolved in a solvent at a given temperature is called solubility. For most substances, solubility increases with temperature.Rock candy can be made from sugar solutions that have an excess of sugar dissolved. The amount of sugar per 100 grams of water at a given temperature has to be higher than the amount that is normally soluble in order to make rock candy. Based on the solubility of sugar in water as a function of temperature, plotted in the graph, how much sugar would you need to dissolve in 100 grams of water to make rock candy at 40 C?
Which of the following energy sources causes the least pollution to the environment?
