Explain how scientists know that the universe is expanding and who was the first to say this

What impact can a volcanic eruption have on climate? Climate is warmed from the heat of the eruption. Climate is cooled as dust blocks incoming sunlight. Climate is cooled as dust falls from the sky.

An advantage of parallel circuits is that

To which class of elements does copper (cu) belong: metal, metalloid, or nonmetal? identify three other elements in this class.

If the distance between 2 objects is decreased to one forth of the original distance, how will this decrease change the force of attraction between the objects?

1. Which statement is accurate? A) A gene consist of two traits. B) An allele is one form of a gene. C) Most alleles have many genes. D) An allele is made up of two genes. 2.

If the density of Cu is 8.96g/cm cubed, what is the volume of 28kg of Cu?

A piece of iron can change in different ways. How is iron bending different from iron rusting?

Which organism would least likely be selectively bred A) Dandelions B) Nantes Carrots C) Belgian Blue Cattle D) Hypoallergenic Cats

You are given a clear solution of KNO3. Using 3-4 sentences explain how you would determine if the solution is unsaturated, saturated, or supersaturated

Which element combination (s) would result in electrons being shared? [] sodium (Na) and oxygen (O) [] carbon (C) and fluorine (F) [] oxygen (O) and hydrogen (H) [] aluminum (Al) and chlorine (Cl)