An Organelle. Imagine that the Cell is a body, like yours or mine. Now imagine that the Organelles are the organs, like the heart or the liver or even stomach. That's the simplest Explanation I have. Hope this helps!
Yes, viruses are very good at adapting to their environment to ensure their survival.
chromosomes
The major function of the reproductive system is to ensure survival of the species, by creating the gametes (sperm and ova, or eggs) that will combine to create new offspring for the parents.
Checkpoint: control systems help ensure the survival of mulitcellular organisms by protecting the organisms from the uncontrolled growth of damaged cells.
semicircular canalsSemicircular canals
Organelles are minute structures present within a cell modified to perform a specific function/ functions. So basically they ensure the survival of a cell by performing their specific functions. Hope this is what you expected.
ceremonies carried out sacrifises to the gods and spirits
Community
to ensure the survival of a species.
As with any organism, that organism has to be important to itself to ensure survival.
they are breedin them
Attack its enemies
To ensure its survival in its certain environment.
As a prey species, rabbits have many adaptations to ensure survival. Sharp senses, speed, and a high reproductive rate ensure their survival.
stay away from it
by showing the butts
Lays many eggs