A compound Machine is 2 machines that work together in order to make a task easier.
A flat line means the the speed is the same . Its moving at the same pace.
This is in the thermosphere which is at an altitude of 85-520km
The prefix for Bio is life so a biologist studies life of living organisms
The prefix for Geo is earth so it would be the study of earth.
What is in common would be animals and plants
what is different is an Geologist studies only earth Biologist studies everything living. I hope this was helpful and I didn't confuse you.
