Rachel carson's book silent spring, documenting the poisonous effects of the pesticide ddt, health officials worldwide who were proponents of the chemical's use.
a. improvised
b. refuted
c. reposed
d. speculated

Orque can be calculated by multiplying the force (n) applied at 90? to the lever arm at a distance (m) from the pivot point (point of rotation), the compound si unit for the torque is n? m. if the force (at 90? to the lever arm) applied is 15 n and it is applied at 2.0 m from the pivot point (point of rotation), what is the torque on the lever?

The diagram shows four locations in the electric field of a positive point charge m. at which location is the electric potential the greatest.

Which of the following is not a transverse wave? a) soundb) lightc) radiod) all of thesee) none of these