In astronomy, the term perihelion refers to the point in the orbit of an asteroid, comet, or planet at which it is closer to the sun. aphelion refers to the point at which the object is the furthest away from the sun. research facts about the dwarf planet ceres. calculate the average orbital speed of ceres in miles/hours when it is closest to the sun and when it is the furthest away.

Iron reacts with sulfur to form iron sulfide. if 60 grams of iron reacts with sulfur to produce 90 grams of iron sulfide, how much sulfur has been used in the chemical reaction?

Researchers determine that the biodiversity in a woodland region is declining. they identify two major threats to the region's biodiversity, a method to address each threat, and the expected outcome of each method. this information is shown in the table. a) reforestation would not benefit many species because most forest species live on the ground. b) reforestation would take the longest time to be effective because trees take several years to grow. c) biological augmentation would benefit only a few species because is is typically not very effective. d) biological augmentation would take less time to ve effective because it targets the majority of prey species.

Arrange the images in order to show how lake-effect snow occurs.