Barrons AP Environmental Science

Use biodegradable   detergents  that    use minimal amounts of  phosphates  ■   Pre-

soak    heavily soiled  clothes

■   Try to  use only    with    full    loads

■   Use as  low a   water   temperature for the washing cycle   as  will    provide

satisfactory    results ■   Always  use a   cold    rinse   cycle

■   Follow  the maintenance schedule    and instructions    found   in  the owner’s

manual

Question 2

10 Total Points Possible

(a) 5 points maximum (i) At what population density was the biomass per plant
highest? (1 point) To determine the optimum population density that produced
the greatest biomass would require dividing the total biomass for each planting
by the total amount of seeds planted per pot. This would provide the average
biomass and produce the following results:

Seeds   per Pot Average Biomass (g)

1

5.0

10

7.0

20

3.8

From the data table, it appears that 10 radish seeds per pot produced the largest
average biomass. When graphed, the results look like: