The coral reefs are found on southern parts where it’s warm. The coral reefs require the following things.
Light
Depth
Water temperature
Salinity
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If someone is choking, the appropriate response might be the Heinrich maneuver.
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There are 6 levels of organisational structure of the human body...
1. Chemical level
2.Cellular level
3. Tissue level
4. Organ level
5. System level
6. Organismal level
Highest level is organismal.
Answer;
-Genetic heterogeneity and epistasis.
Explanation;
-Marfan syndrome is a genetic disorder that affects the body's connective tissue that holds all the body's cells, organs and tissue together.
-Genetic heterogeneity is defined as mutations at two or more genetic loci that produce the same or similar phenotypes. Genetic heterogeneity may be either; allelic heterogeneity, which occurs when a similar phenotype is produced by different alleles within the same gene; or locus heterogeneity, which occurs when a similar phenotype is produced by mutations at different loci.
-A gene is said to be epistatic when its presence suppresses the effect of a gene at another locus. Epistatic genes are sometimes called inhibiting genes because of their effect on other genes which are described as hypostatic.
-From these descriptions the marfan syndrome demonstrates both genetic heterogeneity and epistasis.
<h2>Answer:</h2><h3>Term:</h3>
- A- : A nonmetal that gained one electron.
- B+: A metal that lost one electron.
- C-2: A nonmetal that gained two electron.
- D+2: A metal that lost two electrons.
Explanation:
A metal is an atom which is present in the first and second column of periodic table and have ability to lose electron.
So any cation which is formed by losing one electron will have positive sign and will be metal.
So B+ and D+2 are metals and have lost 1 and 2 electrons respectively.
On the other hand, nonmetals have capability to gain electrons.
So A- and C-2 are nonmetals that have lost 1 and 2 electrons respectively.