E melts, it will cause a rise in sea level, which will affect and perhaps destroy ecosystems on coast lines. Changes in temperatures will also cause shifts in mating cycles, especially f
Answer:
Correct, DNA is a negatively charged nucleic acid. This is because the phosphates present in the sugar-phosphate backbone are negative and hence, make the DNA acidic. That is why DNA is called deoxyribonucleic acid
In tests like gel electrophoresis, the DNA will move towards the positive end of the gel. This is because positive attracts the negative. A DNA sample can be separated on the basis of the negativity it possesses.
Heart disease has been widely known for being genetic, but whether it is due from the environment or genetic has yet to be established. Some heart disease symptoms are chest pain, palpitations, pressure in the chest, and discomfort in the back and jaw. Although heart disease can be deadly, there is treatments available. Firstly, you could get a heart transplant or you can get a surgery to remove what has caused the disease like lead for example. There is a wide variety of medicines available to help those with the disease as well.
When people used stone tools,
The in-between period of time when the first man appeared and when man developed a writing system. Or the period of time before man became literate.
