To determine the effect of fatigue on the action of muscles, each of five boys was given a 10cm clothespin. the student squeezed the clothespins for 30 seconds and recorded the results. after the first trail, the girls rested and the boys jogged in place for 1 minute. a second trail was then done to determine how many times each student could squeeze the clothespins in 45 seconds. identify one error in the design of this experiment.

The table below shows the number of foot bones in some horse fossils. horse fossil recordhorse fossil number of foot bonesp 19q 17r 24s 13ancient horses had more bones in their foot then present-day horses. the present-day horse has 11 foot bones. what is the correct order of evolution of the horse starting from the youngest fossil? a. q p r s b. s r p q c. s q p r d. r p q s

When analyzing tree rings, what do scientists assume a thin ring indicates?

What is the importance of having the us forest service, the bureau of land management, the us fish and wildlife service, and the national park service? to manage land resources for conservation and the development of natural resources to manage land resources for conservation and the development of urban areas to preserve historical landmarks and manage the development of urban areas to preserve historical landmarks and manage the development of rural areas