Vertebrates. they are all chordates, which mean they have a notochord somewhere in their body.
Explanation:
i think they obtain food in order to get the energy they need to carry out life functions
Although the DNA packaging with histones proteins is mean to form nucleosomes (groups of 8 histones proteins), the higher structures why the genetic material is packaged with those molecules is to form chromosomes, as you said.
1. Turn the water off when washing the dishes.
2. Turn the sink off when brushing your teeth instead of letting it run
3. Take a 2-5 minute shower (no longer)
4. Do not leave the water running when you use water
5. Do not fill up a cup of water that you will not drink, pour it in plants or put it in the fridge to stay cold
