Answer:
Scientists use creativity to determine which smaller questions are likely to yield results, imagine possible answers to their questions, and devise ways to test those answers.
Explanation:
The answer is C.Your welcome !!
Different length and size i think. :) ;)
Answer:
C
Explanation:
You are testing the affects of different soils on the germination of seeds, therefore, you must compare different types of soil. The other answers don't have correlation to different types of soils, and are incorrect.
Answer: infrasound
Explanation:
The infrasound is called as the low frequency sound. The frequency of these sounds is less than 20 Hz. The sound waves of the infrasound cannot be perceived by the humans as human ear are less sensitive to the low frequency. The infrasound can be produced in extreme weather conditions, earthquakes, meteor impacts, explosive detonation, collision of oceanic waves, waves on beach, and sound produced by the air conditioner.
