EXCAVATOR are heavy construction equipment consisting of a boom, stick, bucket and cab on a rotating platform (known as the house). The house sits atop an undercarriage with â¦ tracks or wheels. A cable-operated excavator uses winches and steel ropes to accomplish the movements.
First Trimester (0 to 13 Weeks). The first trimester is the most crucial to your baby's development. During this period, your baby's body structure and organ systems develop. Most miscarriages and birth defects occur during this period. Your body also undergoes major changes during the first trimester. These changes often cause a variety of symptoms, including nausea, fatigue, breast tenderness and frequent urination. Although these are common pregnancy symptoms, every woman has a different experience.
The first trimester lasts 12 weeks and is when you'll get most of your nausea,vomitting,tender breasts, sleeplessness and small weight gain. The second trimester is week 13-24. Here your nausea may go away, you can feel your baby kick and your abdomen is growing. The third trimester is longest it can last 4 monthes week 25-40 this is where you'll have swelling, more pain,your baby drops.