Microphones. As communities grew and gatherings became larger, the challenge was to create a device that would allow everyone to hear the performers.
Answer:
d. tortillians
Explanation:
Artists very often use chamois leather widely known as 'shammy' in charcoal and pencil drawing, as blending tool which can soften pencil tones. Shammy is a smaller piece of lamb skin treated by oils.
The gum is not only a means of wiping out a mistake from a drawing, but also a way to draw white lines from surfaces that are already saturated with graphite or carbon, in other words - to work in the negative and blend pencil or charcoal tone.
Because it is a soft and sticky rubber, it will be easy for you to mold exactly the rubber you need to remove coal dust or graphite from paper. It won't stain on the drawing, nor is it too strong to tear the paper due to frequent corrections, so it's great for beginners and students.
The long, thin rectangle above the front door is called a door frame.
So, the mural only has some species- but we don't know which one, living in harmony. We don't know whether it's humans and we have no reason to think that it might be humans.
So it can't be A) or D) - those are connected with human activities.
it's informative to the public about this species so the correct answer is
B. 'Educating the public about the natural environment'
