The animals with the abilities that will help them to survive better than those without the same abilities will likely survive longer and will not be killed by predators.
Those animals will live on and give their children the same abilities to survive, helping the species to adapt to a hostile environment.
They all do ... but you may be thinking of plants - they don't need animals to survive but animals need plants.
Maybe some are animals where not all of them are to survive? e.g turtles Not all of them survive on there way to the sea.
There is variation between species (and individuals) as some digestive systems are better at feed conversion than others. It also depends on the food source, some plants produce calories that are more bioavailable than others.
Depends on the brand of computer. Some survive better than others.
Most aquatic animals living in cold climates can survive quite nicely thanks to their adaptations. Some animals have hair and others like whales have a tremendous amount of blubber that helps to insulate them from cold temperatures.
Some animals need better senses because they may have more predators or prey.
Depends on the adaptation. Those which increase the chances of that animals surviving usually give it some advantage over others, such as being able to run faster, being able to fly better, climb trees better to name a few.
Animals survive in the mediterranean by, living in a condition in which they adapt to their surroundings. i hope i answered your question. :)
Some Species are better suited for the environment they are in. Say, if flood occurs in mountainous region, species that can swim are more likely to survive than animals that cannot.
They often do not thrive and die earlier than others
Variation within species can be caused by genetic mutations, environmental factors, and interactions between genes and the environment. Genetic mutations are changes in the DNA sequence that can create new traits. Environmental factors, such as diet and climate, can also influence variation by selecting for certain traits over others.
yes it is called migration. animals such as birds fly to warmer countries during the winter to survive i know of no others