
Rhythmic contraction and relaxation of heart is called <u>The</u><u> </u><u>Cardiac</u><u> </u><u>Cycle</u> .
Answer:
A lot...
Explanation:
Having abundant species in an ecosystem (plant or animal) the benefit one another is called <em>biodiversity. </em>Biodiversity can consist of the mere food chain, to complex symbiotic relationships among creatures. If an ecosystem were to have no species, there would be no balance between a self-sustaining ecosystem. Any naturally found ecosystem will have biodiversity, otherwise that ecosystem will break (usually it's brand new, crashing ecosystems have to have even one factor removed to do so. Therefore, why would this said 'ecosystem' even begin?).
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Answer:
The main difference is motility and composition.
Explanation:
Cilia are structures involved in movement and therefore there's a strong nervous connection with the inside of the cell. Otherwise, microvilli are mainly used to increase absorption and they're also thinner and shorter.
Another great difference is the composition. Cilia are made up of microtubules, while microvilli is made up of microfilaments.
Weather the temp is high or low
This is true humans systems function independently