Which scenario is an example of a physical change? Wood is burned in a campfire and is turned into ash and smoke. A piece of metal is left in the rain and forms rust. Lead is melted into a liquid to form pellets. Yeast turns sugar into energy, water, and carbon dioxide gas.

The green colored pigment in chloroplasts is? a. nitrogen b. chlorophyll c. chlorophorm d. chlorofloromethane

Consider the equation s + o2 ? so2. what is the product? question 3 options: s so 2 s + so 2 o 2

In cattle a single gene with two alleles determines fur color the fur can be red white or roan roan fur has both red and white hair which of the following statements is true a the allele for roan fur color is dominant over red and white fur color b the allele for red fur color is dominant over white and roan fur color c the roan and white alleles are expressed independently of the other d the red and white alleles are expressed independently of each other