Nitrifying bacteria gets nitrogen from the air and turns it into nitrogen that is available for plant use. This can be seen in the nitrogen cycle which may be useful to you
Because electrons are “pulled” towards the oxygen.
<span>The amniote egg is a water proof structure composed of a shell, embryonic membranes, and the living embryo. </span>
Chromosomal deletion is the loss of genetic code, caused by a segment of chromosome breaking away during DNA replication. The best answer is the third one, "when part of a chromosome breaks off and does not reattach."