On the other hand, cell membranes restrict diffusion of highly charged molecules, such as ions, and large molecules, such as sugars and amino acids. ... Specialized proteins in the cell membrane regulate the concentration of specific molecules inside the cell.
The best example that illustrates a sensitive period is
letter b, where the child tries to learn in speaking a second language because
this is considered to be a sensitive period in which is the period for a
development of new opportunities that a child could learn in which learning to
speak a second language is considered to be a sensitive period.
Answer: A
Explanation:
Whaling is the practice or industry of hunting and killing whales for their oil, meat, or whalebone.
