The term is normally applied to a group of between six and nine elements (boron, silicon, germanium, arsenic, antimony, tellurium, and possibly bismuth, polonium, astatine) found near the center of the P-block or main block of the periodic table.
B. because once is absorbs light it can begin to produce atp and nadph
Ionic bonds <span>are the type of bonds where there is </span>transfer<span> of electrons from one atom to another. The electrons are removed and from one atom and attached to another. A good example is salt which is composed of sodium and chlorine. Sodium readily loses one of its electrons and chlorine readily accepts it. Before losing the electron, sodium has a positive charge, but then becomes negatively charged after giving up the electron. Chlorine has a positive charge before gaining the electron but becomes negatively charged after gaining the electron. These opposite charges between sodium and chlorine attract the two elements together to form the ionic bond.</span>
Answer: depending on the type of chromosomes a and b could be pericentric and paracentric inversions
C. Tandem duplication
D. Reverse tandem duplicate
E. Deletion
Explanation:
In an acrocentric chromosome, a is a type of paracentric inversion which does not involve the centromeres while b is a form of pericentric inversion which involves the centromere. Doubling a particular segment on the chromosome refers to a tandem duplication. Removal of a segment indicate deletion.
The correct option is C, THAT IS, OZONE.
CFC acts as catalyst, which enable oxygen to react rapidly with ozone, leading to the destruction of the ozone layers. The whole process is a series of free radical reactions that occur in five stages. A single molecule of CFC can destroy as much as 100,000 ozone molecules. Depletion of ozone layers has grave consequences such as skin cancers, eye damages, etc.
