Some male peacocks used to have bright
and large tails while
others had dull,
smaller tails.

Female peacocks will
only mate with the
ones that have the
brightest and largest
tails.

Explain how this
would impact the
offspring of male
peacocks over time.

Elements and compounds are pure substances that cannot be broken down physically into a simpler substance. a physical change doesn’t break the bonds between atoms of a substance or form new ones. compounds can be broken down by a chemical change. a chemical change breaks chemical bonds and/or forms new ones between atoms of a substance. what simple substance would a compound break into? the basic elements that make it up! for example, if you passed a very strong electric current through water you’d break the chemical bonds in water and be left with oxygen and hydrogen. which of the following is an example of a chemical change? a separating water into different glasses b breaking frozen ice cubes with a hammer c running an electric current through water d boiling water to evaporate it on a stove

Which statements are true of a scientific theory but not a hypothesis

What best describes the structure of the declaration of independence?