Open Question: please helpp!sciencee help!!?

1]Josh and Ashley are conducting experiments to determine whether sports drink replenishes fluids better than water. They have filled a big cooler with powdered sports drink mixed with water and make sure the powder is completely dissolved they filled 20 identical two quart bottles with the sport the sports drink, and 20 more identical two quart bottles with tap water. They give the 20 bottles of sport drink to the baseball team and the 20 bottles of water to the soccer team. They weigh the players before and after a game to find out how much water each player lost. Part A: what independent variable have josh and Ashley not controlled in this experiment. Part B: describe how josh and Ashley could improve their experiment. 2] Jane is taking a jog on a warm afternoon. her body temperature increases. Her body begins to sweat and increases the surface blood flow beneath the skin in order to decrease her body temperature. Describe the role of three different organ systems that work together to regulate jane’s body temperature. 3] Which of the following organ systems is not directly involved in the digestion of food by the large intestine? A. the digestive system B: The muscular system C: integumertary system D: the nervous system 4] a student measures one side of a steel cube as 5.00 centimeters (cm). the student knows that one cubic (cm3) is equal to one (mL). what is the volume of the steel cube in liters? 5]the idea of what makes up the smallest unit of matter has gone through many changes. the ancient Greek Democritus postulated that all matter is made of solid particles that could not be divided into smaller pieces. He named these particles “atoms” later, an English chemist named john Dalton suggested that the atoms that make up different gases have a definite and characteristic mass. After discovering the electron, J.J. Thompson hypothesized that the atom was a large uniform cloud of positive charge with electrons embedded in it, like raisins scattered through a plum pudding. What was important about each new idea in thinking about the nature of atoms? A. Each new idea used parts of the earlier models of the atom. B. Each new idea showed that the scientists had not read each other’s work. C. each new idea led to the making of new products for the general public. D. Each new idea had nothing in common with the previous ideas. 7] during a science lab on waves, Lisa and Sally were able to calculate the velocity and frequency of a wave in their experiment. They found that the velocity of the wave is 15.0 meters per second (m/s) and its frequency is 6.0 hertz (hz). What is the wavelength of the wave? A: 0.4 meters B: 2.5 meters C. 4.0 meters D: 21.0 meters 8]A mountain climber is making an ascent to a peak that is 2900 meters above sea level. The composition of the air changes at high altitudes, and less oxygen is available. What accommodations must the pulmonary system make in order for the climber to continue his trek without impairment? 9]Tyler wants to find out if music affects plants growth. He places a fern on the windowsill in his bedroom, where the window faces west. He places a cactus on th windowsill in the living room, where the window faces north. He plays classical music for the fern and rock music for the cactus for an hour each day and records his observations of each plant in his notebook. He waters each plant when the soil in its pot feels dry. Two weeks into his experiment, Tyler notices that the cactus has turned from bright green to a yellowish color. Part A: what can Tyler conclude about how music affect plant growth from his experiment? PART B: use the term independent varible to describe how tyler couls improvw his experiment.