Calcium is a chemical element with symbol Ca and atomic number 20. Calcium is a soft gray Group 2 alkaline earth metal, fifth-most-abundant element by mass in the Earth's crust. The ion Ca2+ is also the fifth-most-abundant dissolved ion in seawater by both molarity and mass, after sodium, chloride, magnesium, and sulfate.[5] Free calcium metal is too reactive to occur in nature. Calcium is produced in supernova nucleosynthesis.
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the engineering of rice crops to withstand flooding and contain more nutrients
Explanation:
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They both share the same function
The speed of a longitudinal wave will not be affected by the temperature of its surrounding. Base on the formula for the wave speed (applicable on longitudinal wave), wave speed ( speed in m.s 2) is equal to the distance of a wave (wavelenth in meter) travel over a unit of time (seconds) or wave speed is equal to distance of a wave times the frequency (hertz), temperature is not included in calculating the wave speed.
<span>1) sum of all ecosystems in the world : Biosphere
</span>Biosphere is the worldwide sum of all ecosystems. It can also be termed the zone of life on Earth. T<span>he </span>biosphere<span> overlaps the lithophere, atmosphere, and hydrosphere.</span><span>
2) All populations within an ecosystem : Community
</span>A community is all of the populations of various<span> species that </span>sleep in a similar space<span> and </span>act<span> with </span>each other<span>. A community </span>consists<span> of all of the </span>organic phenomenon<span> factors of </span>a part.<span>
3) Interbreeding members of a species in an ecosystem :</span><span> Demes
</span>A deme could be a<span> term for </span>an area<span> population of polytypic species that actively </span>crossbreed<span> with </span>each other<span> and share </span>a definite cistron<span> pool.</span><span>
4) A defined area consisting of biotic and abiotic components : </span><span>An </span>ecosystem
An scheme could be a<span> community </span>created from<span> living organisms and </span>non-conscious parts like<span> air, water, and mineral soil.</span>
