Question 5

From where do scientists think the water on Earth might have come?

water vapor came out of volcanoes

collisions of comets released water

violent storms created by dust particles

collision of Earth with stars

Which of the following describes an aspect of fetal circulation that does not occur in adult circulation? Both oxygenated and deoxygenated blood use the umbilical artery. Both oxygenated and deoxygenated blood use the umbilical vein.

What is the size of the buccinator muscle on average?

Which of the following statements is true? Evaporation happens equally around the world. Condensation and infiltration drive the water cycle. Evaporation happens more frequently over land than over water.

The peripheral nervous system collects information about changes in internal body temperature using: 1. The brain 2. Nerves and supporting cells 3. The spinal cord 4. Eyesight

What percentage of the air is nitrogen?

Which drugs appear to produce therapeutic effects by occupying the receptor sites for dopamine and blocking its activity?

What is the origin of flowering plants?

A single-gene trait that has two alleles and that shows a simple dominant-recessive pattern will result in

In what way do investigations build scientific knowledge? The results of investigations lead to questions that cannot be tested. They reflect the opinions and social values of scientists, ensuring valid information.

How do chemosynthetic bacteria get energy? A. They convert carbon dioxide or methane into food without light. B. They carry out photosynthesis. C. They carry out digestion. D. They convert carbon dioxide and sunlight into sugar.