The correction option is A.
Reproductive isolation is divided into two major classes, which are prezygotic and postzygotic isolation. Prezygotic isolation refers to the barriers that are present before the egg can be fertilized while postzygotic isolation refers to those barriers that are present after the egg has been fertilized. Mechanical isolation is a type of prezygotic isolation. Mechanical isolation is a type of reproductive barrier which exist because the male and the female genitalia have different sizes, shapes and locations. The snails that coil to the left and those that coil to the right have the locations of their genitalia in different places.
Density which is A. I hope you get it right
The First Iguanodon tooth was discovered in the 1822, it was
considered to be one of the earliest dinosaur discoveries in the planet. In the
year 1825, it was confirmed by Doctor Gideon mantel that the tooth he had
discovered was of an Iguanodon, since the teeth he discovered was similar to
the Iguana which is found today in our planet.
Answer:
Renal tubular lumen
Explanation:
Tubular secretion is the process where fluid are moved are transfer from the peritubular capillaries to the renal tubular lumen of the kidney by the process of active transport and diffusion. It is the opposite of reabsorption and few substances are secreted in the nephron. Urine is left at reabsorption and secretion has taken place in the nephron.
Cells will undergo mitosis to initiate repair of damaged cells, to replicate cells for growth, and to replace dying cells.
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