Because when he hikes up a hill he does much more effort than when he walks in flat ground, also the heart beats faster in order to send blood to all his organism
Oxygen belongs to the Chalcogens family of elements. Oxygen is found in Group 16 or VIA of the periodic table, along with the elements sulphur, selenium, polonium and tellurium.
Answer:
Human activities have a tremendous impact on the carbon cycle. Burning fossil fuels, changing land use, and using limestone to make concrete all transfer significant quantities of carbon into the atmosphere. ... This extra carbon dioxide is lowering the ocean's pH, through a process called ocean acidification.
Explanation:
Brainliest please?
The answer is Faults are storing elastic strain. To simplify, seismic gaps are places where scientist think that faults are keeping elastic strain. In addition, scientists think that stress on a fault constructs up to a critical point and is then unconstrained as an earthquake. The seismic gaps are areas in which no earthquakes have occurred over a long period of time and therefore are probable to be under a high volume of stress.
A common cause of iron deficiency anemia in adult hood is
blood loss and lack of iron in the body. Blood loss is usually the cause
because of bleeding in the GI tract, intestinal bleeding and chronic occult
bleeding. Lack of iron in the body is also a cause because a body is in need of
iron and if it does not exceed the required iron in the body, it may result to
iron deficiency.
