You can use the graph to find out the average volume of carbon dioxide gas given off per second in the period between 10 seconds and 30 seconds. To do this you should draw a line at 10 seconds on
the horizontal axis up to where it meets the line of the graph. Then draw another line up at 30
seconds. Draw a line across as shown in the graph below.
70
60
50
40
volume of carbon
dioxide / cm3
30
20
10
0
20
40
60
80
100
time / s​

How is coal extracted from mountaintop removal mines? a. dynamite is used to create underground tunnels where miners go to extract the coal. b. dynamite is used to break apart rocks and then draglines are used to remove the broken rock and reach the coal. c. coal in mountaintops is extracted by digging strips in the landscape to reach the coal. d. placer deposits in mountain river bottoms are removed by

Imagine you are standing in the antarctic during the southern hemisphere summer. the sky is clear and blue. there are no clouds in the sky. your shadow is cast on the icy ground. what is the color of the shadow?

Although longitudinal waves can travel through all media types what is the disadvantage of this type of wave transmission? a) he efficiency of he wave transmission is greatly diminished as the media becomes less dense b) the oscillation of one set of particles has a huge impact on neighboring particles c) particles become too close together as they bump into each other making it more likely to hit other particles down the line