Plant
Rajesh designed an experiment to test the effect
of fertilizer on plant growth. The table on the right
shows the data he collected. Which changes
should Rajesh make to his experiment to improve
the validity of the data? Check all that apply.
0 Add twice as much fertilizer to the plants.
Measure the growth of a plant that did not
receive fertilizer.
Perform additional trials.
Remove plant 2.
DONA

In a water molecule, hydrogen and oxygen are held together by a(an) bond. a) double covalent b) ionic c) nonpolar covalent d) hydrogen e) polar covalent

15. which of the following is not human-caused groundwater pollution? a. water in an aquifer dissolves elements such as arsenic and mercury from surrounding rock. b. water in an aquifer is contaminated by leachate that seeps into the ground from a landfill. c. water in an aquifer becomes polluted with chemicals used in hydraulic fracturing, or fracking. d. water in an aquifer absorbs harmful bacteria from the drainage field of a septic tank.

From the choices provided below, list the reagent(s) in order that will react with cyclopentanone to form the compound shown below.