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.
The answer to your question should be a and c hope this helps
Adenine, Guanine, Cytosine, Thymine?
Autotrphs, vary in size, unicellular and multu celluar, come in many colors.
This will probably help you: https://quizlet.com/4965961/plant-like-protists-flash-cards/
Answer:
The correct answer is - texture gradient.
Explanation:
The texture gradient is a depth cue that is a distortion in comparison of size in objects that are farther or closer. In this cue, it looks denser as u move away from the object.
It is dependent on the sense of the depth perception as Wendell can easily tell that trees on the mountain are far from him as he only sees a dense green patch instead of trees individual trees and space in between in them.
Thus, the correct answer is option - texture gradient.
