An astronomical unit (AU) is ________.
A) the average distance between Earth and the Sun
B) the average distance between any planet and the Sun
C) any very large unit, such as a light-year
D) the current distance between Earth and the Sun
Question 2
Which of the following represents a case in which you are not accelerating?
A) going from 0 to 60 miles per hour in 10 seconds
B) driving in a straight line at 60 miles per hour
C) slamming on the brakes to come to a stop at a stop sign
D) driving 60 miles per hour around a curve
On average, the ratio of carbon to nitrogen is much higher in terrestrial plants than in other major
Earth’s Heat Budget
Earth emits radiation back out to space from all surfaces, both day and night
The level of emissions from transport in the United States is twice as high as the global average
Earth’s Layered Structure
A Partially Filled 100-Unit Insulin Syringe