The decline in the anchovy industry of peru is blamed on a-el niño b-economics c-dormancy d-pollution

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?

Need only answer if you think you know it

Iron is a transition metal with multiple oxidation numbers. (answer the following) a. what is the iron (ii) ion? how does it differ from the iron (iii) ion? b. if iron were to bond with oxygen, predict the formula for each oxidation number of iron. c. how would each formula be named?