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.
The biogeographic regions that are the most likely to have species that show convergent evolution are Nearctic and Palearctic.
<h3>What are Nearctic and Palearctic?</h3>
The Nearctic and Palearctic are two of the eight (8) biogeographic regions present on the Earth planet.
Palearctic represents (in turn) the most widely extended biogeographic region present on the Earth planet.
Biogeographic regions are specific areas consisting of particular biological (biotic components) features.
Learn more about biogeographic regions here:
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Answer:
Explanation:
Bonds form when atoms share or transfer valence electrons. In a covalent bond, two atoms share one or more electrons. Water is a polar molecule. A hydrogen bond is a relatively weak bond between two oppositely partially charged sides of two or more molecules.
Answer:In most people, that protein is fully functional and results in blood cells that have a round shape and can bind with oxygen efficiently. What would happen if one small change occurs? The change in the sequence of HbS causes the blood cells to be shaped like sausages, rather than round
Explanation:
Your body decided to heal that! but however depending on the depth and width of the cut the matter may heal more slowly! Ouch!! This is called cell reproduction. It happens when your body is hurt physically not emotionally! When this person was slicing the tomato if it was a deep long cut if they healed in a week then there may be a super human problem here! Notta bad thing but still kinda crazy! don't you think? So yessss I hope that this is helpful to you.
