Answer the following question given this paragraph: Look at the rock layers pictured below ( Figure below ); they show a feature called Hutton's unconformity. The unconformity was discovered by James Hutton in the 1700s. Hutton saw that the lower rock layers are very old. The upper layers are much younger. There are no layers in between the ancient and recent layers. Hutton thought that the intermediate rock layers eroded away before the more recent rock layers were deposited. Q: As per hutton's unconformity, what happened to the intermediate layers of rock? Choices: - they metamorphized - they fused - they expanded - they eroded away A:
they eroded away

Answer the following question given this paragraph: The fetus is connected to the placenta through the umbilical cord. This is a long tube that contains two arteries and a vein. Blood from the fetus enters the placenta through the umbilical arteries. It exchanges gases and other substances with the mother's blood. Then it travels back to the fetus through the umbilical vein. Q: The umbilical cord connects the fetus to what structure? Choices: - Ovaries - uterus - cell - placenta A:
placenta

Answer the following question given this paragraph: 3. Zeros that appear in front of all of the nonzero digits are called left-end zeros. Left-end zeros are never significant. A. 0.008 has one significant figure. Q: Zeros that appear in front of all of the nonzero digits are called what? Choices: - zero sum game - significant digits - non-numbers - left-end zeros A:
left-end zeros

Answer the following question given this paragraph: When wood burns, it changes to ashes, carbon dioxide, water vapor, and other gases. You can see ashes in the wood fire pictured here. The gases are invisible. Q: What is the primary gas produced from burning of wood? Choices: - liquid dioxide - Hydrogen Dioxide - toxic dioxide - carbon dioxide A:
carbon dioxide