<span>Increasing rates of work will increase the energy demand of the body. To fulfill the energy needs, the heart needs to pump more blood.
The rate of blood pumped by heart is known as cardiac output while stroke volume is the amount of blood pumped each contraction. It is calculated by: heart rate x stroke volume
The easiest variable to changed to increase the cardiac output would be heart rate. When a person increases his </span><span>rates of work, the heart rate will be increased to increases the cardiac output so the heart can supply the energy needed.</span><span>
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Answer:
Tetrahedron Structure The chemical structure of silica forms a tetrahedron. It consists of a central silicon atom surrounded by four oxygen atoms, with which the central atom bonds. The geometric figure drawn around this arrangement has four sides, each side being an equilateral triangle—a tetrahedron.
Explanation:
Answer:
The correct answer is "secondary succession, an ecological succession step where an area previously occupied by living beings is disrupted".
Explanation:
In ecological succession, an ecosystem changes and develops through a series of steps. The first step, is the primary successional stage where rocks or other sedimentary structures are colonized by microorganisms. The second step, where the ecosystems changes towards a relatively-stable mature stage, occurs when an area previously occupied by living beings is disrupted. This step is named secondary succession, and the most clear example of this phenomena occurs when wildfire clears oak and hickory forests.
It would be B. A keystone species. Keystone species play important roles in ecosystems and when they are removed this can make an entire habitat collapse
Answer:
The cultural environment can be described as a set of beliefs, rules, behaviour that is common to people of the same environment or culture. Cultural environment plays a major role in shaping the ideologies as well as the personality of a person.
A persons behaviour makes up his/her personality. The culture of a person is reflected in the actions that he performs. For example, in some cultures, women are considered to be inferior to men. The women from these cultures have a shy and non- dominant personality as compared to the women of the areas where women are treated equally to men.
