Writing to Westfield Use the model you created to help you write an argument for the people of Westfield in which you support a claim about how the
rust in their water formed. As you write your argument, remember to:
• State your claim about how the rust formed.
• Use evidence from the token activity to support your claim.
• Include vocabulary terms from the word bank below in your argument.
Chapter 2 Question: How did the rust form?
• Claim 1: The iron pipes changed into rust.
.
Claim 2: The fertilizer changed into rust.
Claim 3: The iron pipes and the fertilizer changed into rust.

the scientific method.

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.