They ensure their species survival by having many babies at a time. They also breed frequently and at as young an age as 5 weeks.
they killed rats and animals for food
Rats need things like water to survive in their environment. They also need food and a shelter to live in.
Food helps the rats survive.
by definition ld50 is when 50% survive or dead,,answer will be 5 if i count well
it eats rats for food.
No. Rats can even survive nuclear annihilation. When we dropped the bomb on Hiroshima, the first life that came back to ground zero was the rats.
Yes, some cockroaches survived; as did some humans, dogs, cats, mice, rats, bamboo plants, earthworms, fish, etc.
The 50 rats best able to keep food will survive
In the book "Mrs. Frisby and the Rats of NIMH," the rats learn to stockpile and gather food from the library books they have access to. They use their intelligence and knowledge gained from reading to survive and thrive in their environment.
because it helps them hide during Twilight.
Yes.
it finds shelter such as trees and broken wood pieces