Number of covalent bonds by an atom is equal to number of unpaired electrons.
<h3><u>Explanation:</u></h3>
Valency of an atom is defined as the combining capacity of an atom. Valence electrons are defined as the number of electrons in the outermost shell of an atom.
Now for an atom, when more than one electrons are present, then they often forms a pair. Like for example, if there are 7 valence electrons, 6 get as pairs and only one electron is unpaired. So this is why the halogens like fluorine, chlorine etc has the Valency of 1. For oxygen, 4 valence electrons become paired. And rest 2 electrons form 2 covalent bonds.
The best and most correct answer among the choices provided by your question is the second choice or letter B. <span>Animals obtain carbon from plant and animal consumption.
</span>With the help of the Sun, through the process of photosynthesis, carbon dioxide is pulled from the air to make plant food from carbon. Through food chains, the carbon that is in plants moves to the animals that eat them. Animals that eat other animals get the carbon<span> from their food too.
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Observing free‐living animals, performing experiments in the lab, doing theoretical research, and conducting fieldwork. Because a tradition by definition involves some sort of social learning, it is challenging, if not impossible, to determine whether a behavior is traditional without understanding how it is developing.
Free-living animal observations can offer compelling circumstantial evidence of a tradition. However, observation alone has not demonstrated adequate evidence to suggest that social learning contributes to the formation of behaviors of interest, even in the opinion of multiple researchers who have examined potentially traditional behaviors in wild populations.
The applicability of laboratory studies to the comprehension of how habits arise in free-living animals is always subject to debate. Even while they can generate intriguing theories, in-depth assessments of field data cannot test them. A potential direction is provided by field studies that examine how behaviors of interest manifest in population members.
Learn more about animals behaviors here: brainly.com/question/14377068
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The extremophile characteristic of the enzyme that makes it an essential component in a PCR reaction IS THAT IT IS HEAT STABLE AND CAN WITHSTAND HIGH TEMPERATURES. An extremophile refers to a living organism which can exist in an extreme environment, under high temperature and pressure.
Plants Can Be Engineered to produce higher yield