Have extra set of chromosomes compared to other species that have the same but fewer set is being called polypliod organisms are constantly under assault from their environment. Having extra set of chromosomes make them better able to cope with the pressures that thretend to wipe them out.
Full form of DNA is Deoxiribose Nucleic Acid
Choice A is the correct choice, The graduation rate in a city and the rate of unemployment in that same city would not have a positive correlation.
Increase in cell number for example virus
This is the exact answer:
Bacteria are helpful because they produce oxygen, which our bodies need to breathe, and they help us to digest the food we eat. Bacteria are also helpful because they are used in medicine to help us overcome disease. Bacteria are harmful because they can cause tooth decay and illnesses that can be either common or quite serious.
