I suggest the easiest bat to study for your report are Vampire Bats
Hi there!
<u>Electronegativity</u> is the concept of how likely an atom is to attract the shared molecules in one of these bonds to itself. We know the molecule water is made up of two hydrogens and one oxygen. The electronegativity of hydrogen is 2.2, and oxygen 3.4. An <u>ionic bond</u> needs at least a difference in electronegativity of 1.6. As the difference is less than that, we can say that water is a covalent molecule. This then wipes out choice B, because it is not ionic, and C, as we have seen it is actually covalent.
Now, we can see the difference in electronegativity between oxygen and hydrogen is still 1.2. This means that while it is not at the point for there to be an ionic bond, there is still a difference in attraction, where the electrons will tend to favor the oxygen more and 'hang around it' more. As electrons are <u>negatively charged</u><em><u>,</u></em> this means that the oxygen will gain a slightly negative charge. This then makes the molecule polar, because it now has a charge within the molecule. This means we have our answer, choice D.
In terms of hydrophobic molecules - they tend to be ones without a charge. (If you're interested in this kind of stuff, I'd search hydrophobic up, and possibly also look into hydrogen bonds).
Hope this helps! Feel free to ask me any other questions you have about this specific problem.
They contract to move the body ok thanks and bye
Answer:
Happy cats blink eyes, keep whiskers forward and tail relaxed; Aggressive Cat lowers tail and make it stiff, crouches etc; an Angry cat is rigid and curls itself around its body and a Depressed cat sleeps more than usual.
Explanation:
A Veterinary assistant must be well aware about different body languages of cat. Cats show different body postures in different moods.
i) HAPPY CAT- A happy cat returns our gaze with a blink an eye and there will be a dilation in the eye that indicates happiness and tail will be relaxed.
ii) AGGRESSIVE CAT- An aggressive cat can both be defensive and offensive. Offensive body language includes- stiff and straight leg, lowered stiff tail and a defensive language includes- Crouching of body and eyes completely dilated.
iii) ANGRY CAT- Angry cat has a rigid posture, growls and make its body curled up and make itself look large.
iv) DEPRESSED CAT- Depressed cats hold its ear back and make their fur stand at the end, they tuck their tail and sleeps more than usual.
