Hello,
I believe you're asking which option is true. If so, A) do not require a medium. Unlike mechanical waves, electromagnetic (or light) waves do not require a medium. It has been proven that light travels in a straight line. Light waves are, in fact, electromagnetic radiation, and they can travel in a vacuum.
Faith xoxo
The answer is A
Explanation: don’t mind the volume, look at the surface area-to-volume ratios because they affect the efficiently of a cell to obtain nutrients and eliminate waste.
Hope that helps! :)
Sympathetic nervous system is activated in this situation.
This branch of nervous system is activated when any individual encounters stressful or dangerous situation.This is responsible for 'fight or flight' response.
It takes place by activating adrenal gland which releases specific hormones adrenaline and nor adrenaline also called as catecholamines . These hormones are responsible for the appropriate physiological response to the situation.
Answer:
D.
Explanation:
i never heard lonosphere when i learned about the three layers of the atmosphere
The correct answer is c.Amphibians and reptiles. An example of similarity between the two classes of vertebrates is the presence of a heart with three chambers
