Answer:
A cell membrane is made of two layers.
The cell membrane is composed by a phospholipid bilayer where the interior side is hydrophobic and non-polar, while the outside is hydrophilic and polar
Pores and proteins in the cell membrane allow passage through it.
The pores and proteins in the cell membrane have several functions such as, for example, cell signaling (proteins) and selective transport (pores)
Low birth weight, premature birth, miscarriage (fetus dies before the 20th week of pregnancy), birth defects (hearing issues, or heart defect)
Pavlov's dog stopped salivating to the bell when the food was no longer paired with the bell. This is called:
extinction
I think what your answer is would be Amphibians? I could be wrong.
Hope this Helps! :)
Crystal structure............... .........
