Question

intro to modeling hw

1. the chart below shows information about the relationship between the age of the mother and the occurrence of down syndrome in the child.

age of mother	occurrence of down syndrome per 1000 births
30	1.0
35	3.0
40	10.0
45	30.0
50	80.0

if a mother has a child later in life, her children may be impacted. describe evidence from the graph that supports the claim.

1. the graph below shows the results of an experiment.

effect of temperature on growth of fish

water temperature (°c)	percentage of fish reaching maximum size
15
20
25
30

key

• brook trout
• - - northern pike
• - - largemouth bass

as global temperatures increase, various fish populations decrease.
support or refute the claim using evidence from the graph.

Explanation:

1. For the first question, as the age of the mother increases from 25 to 50, the occurrence of Down - syndrome per 1000 births increases from 0.8 to 80.0. This shows that older mothers have a higher risk of having a child with Down - syndrome.
2. For the second question, as water temperature increases from around 25°C to 30°C, the percentage of fish reaching maximum size for brook trout, northern pike, and largemouth bass decreases. This supports the claim that as global temperatures increase, fish populations may decrease since growth is negatively affected.

Answer:

1. As the age of the mother increases, the occurrence of Down - syndrome per 1000 births increases. For example, at age 25 it is 0.8 and at age 50 it is 80.0.
2. The claim is supported. As water temperature increases from 25°C to 30°C, the percentage of brook trout, northern pike, and largemouth bass reaching maximum size decreases.