Answer:
1-Mouth:the mechanical digestion takes place in mouth with the help of teeth. chewing is the machanical digestion of food in mouth.
2-Stomach: by the churning process. churning is the mixing of food in stomach by the movements of smooth muscles in stomach wall.
Explanation:
Answer:its a covalent bond
Explanation:
<span>Homologous chromosomes have to attach together to the same spindle fiber during prophase 1. Then, some of them may go through crossing over, which switches fragments of them. Then, each pair of homologous will migrate to equatorial plane during metaphase 1. So, in the metaphase plate you will have pairs of homologous, both of them duplicated, but the 4 chromatides may be different due to crossing over (it depends on where the enzymes have cut and pasted in that process).</span>
