They are semi-permeable because they can diffuse and pass through the plasma membrane easily.
Explanation:
it consists of mouth, pharynx, gullet, stomach, small intestine, large intestine, appendix, colon, rectum, and anus.
All these parts are found in most vertebrates
OB. A man’s testicles have not properly descended, lowering sperm count
A is the correct answer you are looking for
The is answer is:
1. first to document careful observations of different cell types