your answers are b., travel, & E., loosely packed soil
That is true but only bc of mutation
A peplomer is a glycoprotein spike on a viral capsid or viral envelope. These protrusions will only bind to certain receptors on the host cell; they are essential for both host specificity and viral infectivity.
Answer:
C: Hormones
Explanation:
hormones do not "signal" other cells. I hope this helps :)
chemical changes cannot be reversed because you cannot take a chemical out of another chemical change. it is impossible. EX: water+food coloring= you cant take the food coloring out of water.
