Response: B. Shrubland
The thornscrub ecosystem exists between the Sonoran and Chihuahuan Deserts. It characterizes a typical shrubland comprising smaller trees like velvet mesquite and shrubs such as Catlaw acacia and cactus commonly found in the Sonoran Desert. The thornscrub shrubland showcases distinct wet and dry seasons, allowing for the growth of both annual and perennial herbs. Consequently, the vegetation is influenced by alternating wet and dry periods.
The independent variable identifies the amount of water intake among the football players.
The endurance of the players, assessed by counting how many times they ascend and descend the bleachers before needing to rest, serves as the dependent variable.
The coach hypothesized that greater water consumption would lead to enhanced endurance in the players.
This experiment lacks a control group, although it would consist of players who did not consume water prior to practice.
The experimental group comprises players who did drink water before their practice sessions.
Constants throughout the experiment include the definition of endurance (the method of measuring it), the volume of water each player consumes weekly, and the players involved in the study.
The absence of a control group raises concerns about the reliability of the results obtained from this experiment.
The Earth is at the center Explanation: Aristotle first postulated that the Earth was round but maintained that all celestial bodies revolved around it.
