HI Four groups of corn are given different types of natural fertilizer: fish emulsion, worm castings, cow manure compost, and no fertilizer. The height of the corn is measured each week. What is the control group?

Fish emulsion
Worm casting
Cow manure compost
No fertilizer

What type of electromagnetic wave is used in security pens? a. x-rays c. microwaves b. visible light d. ultraviolet radiation select the best answer from the choices provided

Astudent is performing an experiment comparing sound and light waves. the student gathers the following data. what conclusion does the student most likely make based on this data? light waves always travel the same speed; however, the speed of sound is determined by the medium that it travels through. all sound waves always have the same energy, so the temperature of the medium does not affect wave speed. light needs to vibrate particles, so it travels fastest in tightly packed solids, while sound does not need a medium, so it travels fastest in a gas. tightly packed particles in solids slow down the light waves; however, sound waves make particles bounce into each other, so they travel faster in solids.

You are about to open a container of soy milk but notice that there are instructions to “shake well before serving.” the soy milk is most likely a