Answer: Van der Waals forces
Explanation:
Van der Waals forces are weak intermolecular forces that depend on the distance between two particles. They are caused by correlations in the change in polarization between two nearby particles. To put it in other words, when a particle changes its polarization (becomes more positive on one end and more negative on the other), so does the adjacent particle, and the next one, and so on. This causes these particles to stick together weakly.
The tiny "hairs" increase the surface area of the gecko's feet in contact with the wall, which makes the bond stronger and allows it to support all of its weight.
Because experiments have shown that geckos stick well to both hydrophobic and hydrophilic surfaces, we can assume there aren't any hydrogen bonds present.
Ionic bonds can't be present either because geckos wouldn't stick to electrically neutral surfaces, as these bonds require charged molecules.
Answer:
The correct answer is option D) selective breeding.
Explanation:
Selective breeding is a process in which human selects a particular organisms for breeding purpose to avail a specific characteristics in the offspring which is present in the organisms that are used for breeding. For example, if a person wants a cow that produces high amount of milk so it can breed the local cow with male of high milk producing specie. So the calf which is formed have the characteristics of high milk producing specie.
Una de las funciones del utero es albergar el ovulo fecundado para que se desarrolle el feto.
CHS stands for cannulated hip screw in medical terms. C<span>annulated screws are used in bone and joint surgery to repair breaks and to secure artificial implants which may be used to replace part or all of a joint. Hope this answers the question. Have a nice day.</span>
Answer:
Nitrogen
Explanation:
Nitrogen is the most abundant element in our atmosphere and 7th most abundant in the universe. It is vital in the formation of nitrogenous bases which are the key bonds that form nucleic acids such RNA and DNA.
