bacteria in food can be killed by many means such as:
a) Pickling. for example food is pickled as bacteria cannot live in very acidic conditions.
b) Boiling. boiling water or liquids can help kill bacteria present in them.
c) Using preservatives can also help
d) Immersing food in salt or sugar solutions is also an other way
Answer:
The correct answer would be B) the flow of water through the body of a sponge.
Sponges are multi-cellular organisms which are devoid of organ systems like digestive system, nervous system, circulatory system et cetera.
They have a unique feeding system in which they keep constant water flow through their bodies. They obtain food and oxygen and remove waste through this water movement.
The movement of water throughout the sponge is unidirectional in nature. It enters the sponge body through ostia and exit from the osculum.
As the water is pumped out, the cells present in the walls filter out the food present in the water.
Where is the natural habitat at
A I’d pick a is the right
Archaebacteria, hope this helps