A covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding.
Answer:
meteorite striking the dinosaures
<h2>Mutagenic characteristic of chemical</h2>
Explanation:
- The earth we live in really affects whether we experience hereditary transformations. The nature of water we drink and the air we inhale can really influence the uprightness of our DNA. Our bodies are intended to address any slip-ups, however, risks from the earth can expand our odds of winding up with a change. A natural operator that causes a transformation is known as a mutagen
- chemical mutagens are standard instruments for mutagenesis in a variety of living things, and they are a fundamental strategy for making changes in phenotype-based screens in most genetic structures. Although in the exploratory arrangement, all whole animal screens incorporate the time of lines harboring transformed chromosomes followed by the examination of the consequent phenotypes in the heterozygous or homozygous state
- Hence, the right answer is "chemical is not mutagenic in nature"
The immigration rate and the emigration rate are equal in case of a stable population.
Option A
<h3><u>Explanation:</u></h3>
A stable population is defined as the number of individuals residing in an environment with a limited resources and the number of individuals residing more or less remains constant. In case of a population, there are different factors which tends to divert the population out of the stability, like immigration or emigration. Immigration is the addition of individuals to the population from outside which increases the population, and emigration is the loss of individuals which decrease the population. In case of a stable population, the number of immigrants and emigrants remain more or less same, which maintains a stable population.
