Answer:
The average of the snails having less thick shell will disappear.
Explanation:
When a population of snails consists of both less thick and more thick snails. When an invasive species of crab enters this population.
This crab is capable of eating the snails having thin shell. Sooner or later the crabs having thin shells will disappear and the snails having thick shells will survive more.
Over a period of time there will be no snails left with thin shells only the shells having thick shells will be naturally selected and will reproduce to have a population.
The brain and the spinal cord are the organs of the central nervous system.
Answer:
Explanation:
The chaparral biome has a large amount of biodiversity, which helps insulate an environment against the loss of a single species. Therefore, one would not expect the chaparral biome to be too sensitive to the loss of a single species.
The marrow in certain bones in your body create red blood cells, so eventually you get your blood back. The reason we need to give blood is for people, who lost to much blood to quickly to regenerate it in time to supply their body with oxygen.
