In the diagram, planets A, B, and C have the same mass. Which of these statements is true about the motion of these planets?

Which of the following is an example of a domesticated animal?

Abasic premise of the national response framework is that: a. most incidents begin and end locally and are managed at the local or tribal level. b. response partners use nonstandard structures to allow for flexible and scalable responses. c. readiness to act encourages response partners to self-dispatch to an incident scene. d. incidents should be managed at the highest jurisdictional level possible.

What greek scientist created a screw to move water for irrigation?