Covalent bonds are formed when two atoms are able to <em>share</em> electrons.
Iroinic bonds are form when two atoms are <em> </em> electrons from each other to complete the bond. This results in a pair of ions.
<u>Covalent bonds:</u>
- Have a definite shape.
- Have a low melting point.
- At room temperature they are in a liquid or gas.
- They occur between two non-metals.
<u>Ionic bonds:</u>
- Have no definite shape.
- Have a high melting point.
- At room temperature they are solid.
- They occur between a metal and a nonmetal.
The answer is false for this question
Answer:
The correct statement is A larger brain allows humans to solve complex problems.
Explanation:
From the ancient time, the human brain has size increased three times. The most probable reason for the evolution of brains is that larger brain allows humans to handle complex problems more easily.
complex and large brains help humans to understand and store a different type of knowledge and information and aids in interacting with each other.
The current time human has a larger and complex brain in any living primates.
Thus, the correct statement is A larger brain allows humans to solve complex problems.
Is this not about a human? We only have one aortic arch
God, He is the one that created the earth.
