Answer:
Crust
Explanation:
The rigid outermost layer of Earth is called the crust.
Most digestion in humans occurs in the first 25 centimeters of the 6-meter length of the small intestine called the duodenum.
<h3>What is
digestion?</h3>
In order to be absorbed into the watery blood plasma, large, insoluble food molecules must be broken down into smaller, water-soluble food molecules during digestion. These tiny molecules enter the bloodstream through the small intestine in some organisms. Based on how food is broken down, digestion, a type of catabolism, is sometimes separated into two processes: mechanical digestion and chemical digestion.
When a huge food item is physically broken down into smaller bits so that digestive enzymes may reach them, this process is referred to as mechanical digestion. Mastication in the mouth and segmentation contractions in the small intestine are two examples of mechanical digestion. Enzymes break down food into little molecules that the body can use during chemical digestion.
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Because the majority of cell differentiation occurs during the EMBRYONIC phase, .................. The embryonic stage of pregnancy is the period after implantation during which all the important organs and structures in the growing fetus is formed. Tetratogens are factors that caused malformation of embryo. Exposure to tetratogens during embryonic stage cause most destructive damages.
The correct answer is <span>separation of homologs at anaphase I. </span><span>The physical separation of alleles on the two homologs in anaphase of meiosis I explains why each gamete contains one allele of each gene.</span>