Two planets orbit a distant star. one planet has a semi-major axis of 10 au and a period of 10 years. the second planet has an orbit which is highly eccentric. at closest approach (called periastron) it is 1 au from the star, while its maximum distance from the star (called apastron) is 19 au. draw, approximately to scale, the orbits of the two stars about the parent star. what is the orbital period of the second planet?

Imagine you work as a consultant, and your daily job involves listening to the constructive criticism of others. as part of your job, you must listen to opposing viewpoints to make important decisions. in this activity, you are a consulting dam engineer. you must make a decision about four different dams; should they be repaired, taken down, or left alone? you will listen to contrasting opinions about what should be done with the dams before you make the final decision. as the consulting dam engineer, what do you decide to do with this dam? explain your reasoning. by making your decision, did you support the opinions of the mayor and/or the dam safety official? why or why not? (site 1)

The covers all of earth like a thin shell,but it is not a solid sheet of material.it is broken up into several large sections and many smaller ones. fill in the blank.

The pacific islands that lie along tectonic plates may have volcanic activity are uninhabited may not have agricultural economies are located in the tasman sea