Plz answer any one of these (leave the question number)

Which is not one of the major climate zones? question 3 options: rain forest polar tropical temperate

Simple machines can a. increase force only b. decrease force only c. increase or decrease force

Asolid round steel rod 6.25 mm in diameter and 375 mm long is rigidly bonded to the end of solid square brass rod 25 mm on a side and 300 mm long. the geometric axes of the bare are along the same line. an axial tensile force of 5.4 kn is applied at the extreme ends of the assembly. for steel e = 200 gpa and for brass e = 90 gpa. determine the total elongation for the assembly.