Page 161 3. how do people adapt to environmental extremes and other circumstances? human populations that engage in activities that stress the skeleton (e. g., walking, lifting, carrying) have bones with optimum density.

a. true

b. false

Asnail, elodea (aquatic plant), or both were added to the tubes and they were stoppered. tubes were placed under a grow light for 24 hours and the results recorded. the test tubes were then covered for 24 hours to produce a dark environment and the results recorded. which statement best explains the change in test tube d from the light setup to the dark setup.

Name the two stages involved in protein synthesis and explain what occurs in each of the two stages. be sure to also indicate where each process takes place. plz don't give one sentence answers : d

Explain the significance of thesaurus geographicus