An ectotherm gets its heat from external sources
(Remember "ecto" means outer, "endo" means inner)
<span>They are not visible because the chromatin coils up,shortens,and thickens.</span>
Answer:
those cause by bacteria
Explanation:
Antibiotics fight bacterial infections either by killing bacteria or slowing and suspending its growth. They do this by: attacking the wall or coating surrounding bacteria. interfering with bacteria reproduction.
B. It was an explanation for how the earth originated.
