Since the pyramid narrows from bottom to top, we can conclude that the amount of energy keeps on decreasing as we move to a higher trophic level.
Explanation:
Ecological pyramid are graphical representation of data that shows the number of organisms,amount of energy and amount of biomass at each trophic level in a food chain.
Food chain is a sequence of organism who are related to each other by the process of Eating and being Eaten up.
The base of the ecological pyramid represents the producer or the first trophic level while the apex of the pyramid represents the cosumers at higher levels of food chain; other consumer trophic levels are in middle.
There are three types of Ecological pyramids:
- Pyramid of number: This shows the number of organisms of a population present at each trophic level.
- Pyramid of energy: This shows the amount of energy available at each trophic level and clearly depicts the energy loss at successive trophic level.
- Pyramid of biomass: This pyramid represents the total dry weight of living beings present at each trophic level.
The pyramid of Energy is always an upright pyramid because amount of energy transferred from one trophic to next keeps on decreasing as the energy is lost in form of heat and is also used up by the organism at a given trophic level and only the remaining is part to the next.
The answer is interphase
Diagram
https://en.wikibooks.org/wiki/An_Introduction_to_Molecular_Biology/Cell_Cycle#/media/File:Cell_Cycle...
Answer:
Independent Variable
Explanation:
The independent variable is what we are changing or what is being tested.
The control/constant group is when you do not change anything and you want to see how the object acts under normal conditions.
The dependent group is what you are measuring. (aka your data/results)
The environmental consequence of strip mining on water is toxic material left after mineral extraction can leak into waterways.
WHAT IS STRIP MINING:
- Strip mining is the process of extracting ore by removing the soil and rock that overlays the mineral ore.
- Strip mining is a commonly used extraction method for coal. It is however, used for ores that are close to the surface of the soil or rock to be removed.
- Strip mining, however, has detrimental effects on consumed water and environment as a whole because toxic materials left after mineral extraction can leak into waterways.
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Answer:
Venous return (VR) is the flow of blood back to the heart.
Venous return to the right atrium is the most important factor determining cardiac output, provided both ventricles and the pulmonary circulation are normal.
Explanation:
Venous return refers to the flow of blood from the periphery back to the right atrium, and except for periods of a few seconds, it is equal to cardiac output.
Venous return is facilitated by a number of factors, including inspiration, increased total blood volume, increased venomotor tone, the cardiac suction effect, the presence of venous valves and the skeletal muscle pump.
Contraction of the skeletal muscles surrounding veins increases the pressure within the veins, pushing open the proximal valve and forcing blood toward the heart. For example, when calf muscles contract during exercise, blood is forced toward the heart, thus increasing venous return.
Learn more about venous force here:-
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