According to the information in the article, could the increase in algae in the neighborhood lake be related to Sarah’s farm? Why or why not?

An increase in the algae in the neighborhood lake could be related to Sarah's farm as a result of the use of fertilizer.

Explanation:

Fertilizers can be used washed into the lake during the rain downpour. When such happens, the fertilizer provides food for the algae already in the lake which can lead to a dramatic increase in the population of the algae.

Take samples from the neighborhood lake reveal that there are high levels of phosphorus and nitrogen which are the key compositions of most fertilizers.

Therefore, it is likely that the lake contains some of the fertilizer that where washed from Sarah's farm.

the median of the data is 4.

step-by-step explanation:

the median means the middle number of a given number.

to decide which one is the median, arrange in ascending or descending order. but sometimes, you may find two(2) number in the middle, but it's easy, just add them together and divide by 2.

so,   determine the median of the data. 2, 3, 3, 4, 5, 7, 9

it is already arranged, count 3 times forward and 3 backward and the one left is your answer.

2,3,3,4,5,7,9

our answer is 4.

hope this !