<span>Mangrove forests cannot
withstand freezing temperature that is why they can only grow at tropical and
subtropical latitudes whereas salt marshes grow in middle to high latitudes. Mangrove
forests can be recognized by their tangle of roots that allow them to stand
still on stilts above water. The roots of the mangrove trees slow the movement
of tidal waters causing the sediments to settle out of water and build up the muddy
bottom. For salt marshes, they are coastal wetlands that are flooded and
drained by salt water brought by tidal waves. The difference between the two is
that mangrove forests are woodlands and salt marshes are coastal wetlands. </span>
Answer:
Penicillin binds and inhibits bacterial enzyme DD-transpeptidase.
Explanation:
Penicillin is made up of 4 rings of β-lactam and acts by binding to DD-transpeptidase of bacteria. The DD-transpeptidase facilitates the cross-linking of the peptidoglycan cell wall of bacteria. This leads to malformation of the protective cell wall of the bacteria and causes it to lyze and die.
Answer: Hypothalamus
The brain coordinates the physical changes that occur during puberty and the hypothalamus plays an especially important role in this process.
Explanation:
Since the hypothalamus controls the secretion of hormones from the pituitary gland, and the pituitary gland, also known as master gland, controls the activities of all other glands like the following:
- gonads (ovaries and testes), responsible for producing many of the sex hormones and hence, development of sexual characterictics
- thyroid, responsible for producing thyroxine, responsible for body metabolism and development.
Thus, hypothalamus plays important role in puberty
