A radula is an anatomical structure that is used by mollusks for feeding, sometimes compared to a tongue. It is a minutely toothed, chitinous ribbon, which is typically used for scraping or cutting food before the food enters the esophagus
Living in herd is a structural adaptation.
There are three different kinds of adaptations: behavioural, physiological and structural.
Adaptations help animals survive and their ecosystem.
The second sentence does not sound correct but it seems correct to me (just not in grammar).
Hope it helped!
-Surface area to volume ratio. (surface area / volume)
-Nucleo-cytoplasmic ratio.
-Fragility of cell membrane.
-Mechanical structures necessary to hold the cell together (and the contents of the cell in place)
Answer:When food, water, and space used by a population stay stable over time.
Explanation:
The answer is; geysers
Due to the water underground being heated from geological reason such as heat from magma chambers, the water heats up and expands. The pressure of the rock above the water causes it to reach very high pressures. The water finds cracks and fissures in the rocks above until it reached the surface. The pressure releases and the water eject from the ground into a hot fountain.