By flooding the uterus with a rich supply of blood for the tissue that lines the inner side of the uterus and it is called the endometrium. This happens each month during the menstrual cycle, when the body with the help of hormones which have different levels in the different times of the cycle. When it is time to prepare the uterus for a fertilized egg, the blood vessels of the endometrium swell and supply more blood to the tissue.
In the case that a fertilized egg cell reaches the uterus, it will attach itself to the endometrium and this is the place where the fetus, and then the baby will start growing. The endometrium is the base for the growth of the placenta which is the main and most important factor for protection and nutrition of the baby.
Fruit flies produce offspring relatively fast and have specific traits, such as eye color and body color/shape. They are easy to observe and their traits are easily traced throughout the next generations.
X. Mechanisms and habits that include limit water loss.
Explanation:
Many mammals that live in dry ecosystems tend to have above adaptations because there is a shortage of water in these areas. And of course water is the most essential thing for survival.
The slight positive charges on the hydrogen atoms in a water molecule attract the slight negative charges on the oxygen atoms of other water molecules. This tiny force of attraction is called a hydrogen bond. This bond is very weak.
