Q: What is the term for preserved remains or traces of organisms that lived in the past? Read this paragraph and choose the correct option from the provided answers: Fossils are preserved remains or traces of organisms that lived in the past. Most fossils form in sedimentary rock. Fossils can also be preserved in other ways. Fossilization is rare. It's very unlikely for any given organism to become a fossil. Choices: - deposits - bones - remains - fossils A:
fossils

(Question)
Q: What is the skin of most reptiles covered with? Read this paragraph and choose the correct option from the provided answers: Reptiles have several adaptations for living on dry land that amphibians lack. For example, as shown in Figure below , the skin of most reptiles is covered with scales. The scales are made of very tough keratin, and they protect reptiles from injury, and also prevent them from losing water. Choices: - pores - cuticle - hairs - scales A:
(Answer)
scales

Ques: Q: What theory explains the physical behavior of gases? Read this paragraph and choose the correct option from the provided answers: The physical behavior of gases is explained by the kinetic theory of gases. Choices: - thermodynamic theory of gases - relativity theory of gases - quantum theory of gases - kinetic theory of gases A:
Ans: kinetic theory of gases

(Q).
Q: Found in plants and algae, chloroplasts are the site of what process? Read this paragraph and choose the correct option from the provided answers: Choices: - transferase - glycolysis - spermatogenesis - photosynthesis A:
(A).
photosynthesis

Ques:Q: What forms when nitrogen and oxygen combine at high temperatures? Read this paragraph and choose the correct option from the provided answers: Nitrogen oxides form when nitrogen and oxygen combine at high temperatures. This occurs in hot exhausts from vehicles, factories, and power plants. Choices: - oxygen oxide - ammonia oxide - carbon dioxide - nitrogen oxide A:

Ans:nitrogen oxide

Q: The expulsion stage begins when the fetal head enters what? Read this paragraph and choose the correct option from the provided answers: Expulsion Stage The expulsion stage begins when the fetal head enters the birth canal and ends with birth of the newborn. It typically takes up to 2 hours, but it can last longer or be completed in minutes, depending in part on the orientation of the fetus. The vertex presentation known as the occiput anterior vertex is the most common presentation and is associated with the greatest ease of vaginal birth. The fetus faces the maternal spinal cord and the smallest part of the head (the posterior aspect called the occiput) exits the birth canal first. In fewer than 5 percent of births, the infant is oriented in the breech presentation, or buttocks down. In a complete breech, both legs are crossed and oriented downward. In a frank breech presentation, the legs are oriented upward. Before the 1960s, it was common for breech presentations to be delivered vaginally. Today, most breech births are accomplished by Caesarian section. Vaginal birth is associated with significant stretching of the vaginal canal, the cervix, and the perineum. Until recent decades, it was routine procedure for an obstetrician to numb the perineum and perform an episiotomy, an incision in the posterior vaginal wall and perineum. The perineum is now more commonly allowed to tear on its own during birth. Both an episiotomy and a perineal tear need to be sutured shortly after birth to ensure optimal healing. Although suturing the jagged edges of a perineal tear may be more difficult than suturing an episiotomy, tears heal more quickly, are less painful, and are associated with less damage to the muscles around the vagina and rectum. Upon birth of the newborn's head, an obstetrician will aspirate mucus from the mouth and nose before the newborn's first breath. Once the head is birthed, the rest of the body usually follows quickly. The umbilical cord is then double-clamped, and a cut is made between the clamps. This completes the second stage of childbirth. Choices: - head is outside vagina - you can see the umbilical cord - uterus - birth canal A:
birth canal