Hey There!
Here is your answer:
Your answer is that a experiments should be controlled because the experiment could go out of control which could harm or hurt someone.
Also the definition of a controlled experiment is a part of the experiment that's not touched.
Ex: Water is your controlled experiment that's because our not doing anything to the water.
If you need anymore help just ask me!
Hope this helps!
Answer:
The answer would be E
Explanation:
The transfer of carbon from the atmosphere to the biosphere is the role of photosynthesis in the carbon cycle.
Answer:
Explanation:
Waxy cuticle is a white powdery substance that is insoluble, it is found usually on the surface of stem or leave and it prevent excessive loss of water through transpiration.
It is an adaptive mechanism used in dry areas or desert to help plants retain water that is needed for their growth by reducing amount of water loss through transpiration.
Cactus is an example of plant with cuticle that thrive well in dry areas
Answer:
B
Explanation:
Low-pitched sounds don't vibrate a lot and their wavelengths are farther apart meaning the tops of the wave will be farther.
Also, this isn't a biology question. Have a good day.
