Answer:
The damage to ozone layer is done by halogens such as Chlorine and Bromine.
Answer:Aging. ...
Family history. ...
Smoking. ...
Alcohol. ...
Sunlight and ionizing radiation. ...
Organic and inorganic chemicals. ...
Viruses and Bacteria. ...
Hormone therapy.
Explanation:
Answer:
The rock and fossil record shows that all of the changes in the Earth's history have been slow and gradual.
Explanation:
Rock and fossil record are of evolutionary importance, because these records gives ideas regarding the time since existence of life in Earth. This information can be used to to get a clear picture regarding how the living organisms of ancient age interacted with the environment of that time. The records thus obtained from rock and fossil are sufficient enough to conclude that evolution do are taking place which is very slow and gradual in such a way, so that it could provides for adaptability to the changing surrounding environment.
The heart<span> is at the centre of your circulatory </span>system, which is a network of blood vessels that delivers blood to every part of your body. Blood carries oxygen and other important nutrients that all body organs need to stay healthy and to work properly. In other words, it supplies oxygen and nutrients to our bodies by working with the respiratory system<span>. At the same time, the </span>circulatory system<span> helps carry waste and carbon dioxide out of the body. Hormones — produced by the endocrine </span>system<span> — are also transported through the blood in the </span>circulatory system<span>.
Hope this helps xox</span>