Historical geology is a<span> branch of </span>geology that<span> deals with the </span>history<span> of the earth. Hope it helps :) </span>
<h2>Answer:</h2>
- Ionic bond: It is the bond formed by the complete transfer of electron from one atom to an other atom.
- Covalent bond: It is the bond formed by the mutual sharing of the electrons.
- Van der waal: These are weak interactions between one molecules with other polar or non polar molecules to hold to each other by weak force of attraction.
<h2>Explanation:</h2>
- <u>Similarities between van der waal, ionic bonds and covalent bonds:</u> All of them are a type of inter-molecular forces, in which ionic bonds are stronger than covalent bond and van der walls forces. And covalent bonds are stronger than van der wall forces.
- <u>Difference between van der waal and ionic bonds:</u> Ionic bonds are formed by complete transfer of electrons from one atom to an other atom. Covalent bond are formed by sharing of electrons while in van der waal, there is a slight attraction when oppositely charged molecules come close to each others.
Result: Van der wall forces are weakest among ionic and covalent bonds.
Answer:
Restoration of the diploid condition and the determination of gender.
Explanation
Conception occurs when the male gamete fertilizes the egg and an embryo is formed.
This is event significance in biological developmental science because at this point is when the diploid condition is restored.
When the sperm containing half the number of chromosomes of the father fuses with the egg that contains half the number of chromosomes from the mother to form a diploid embryo.
Secondly, depending on the sperm that fertilized the egg, gender is determined.
<span>somatic
This is a piece of the peripheral nervous system. Real elements of the substantial sensory system incorporate willful development of the muscles and organs and reflex developments. In the course of its development, tangible neurons convey driving forces to the mind and the spinal string.</span>
They exhibit contact inhibition
