As we travel from plankton to polar bear, only about ten percent of the energy in one trophic level gets passed to the next level.
Explanation:
The energy flow in an Ecosystem has to aspects which should be considered:
- Firstly, the energy flows is unidirectional from producers through herbivores to carnivores.
- Secondly the energy flow decreases with successive trophic levels.This is due to the fact that some energy is always lost as heat and is used by the organism at that trophic level.
Lindeman's work suggested that about 90% energy is used up at the trophic level and only ten percent of it is transferred to the next level.
This was later formulated as the Ten percent law.
the answer for this question is B/3
Answer:
if a answer is virus or some sort of bacteria, the thata it
The left atrioventricular valve is structurally different from the aortic valve in the following ways.:
The Left atrioventricular valve is bicuspid valve while the Aortic valve is the semilunar valve.
The Left atrioventricular valve has irregular leaflets that regulate the opening and closing of the atrioventricular orifice, while the aortic valve has cusps like structure folded like half moon shaped structure.
Specialized supporting structures are needed to support the AV valve to the heart while the semilunar shape of aortic valve is self supportive.
Explanation:
Atrioventricular valves maintain the unidirectional flow of blood from atria to ventricles while the aortic valve maintains unidirectional flow of blood from left ventricle to the aorta.