The fact that gravity exists as it can be repeatedly tested and verified
Coal can disrupt life and air. Coal is a non reusable resource and it can make life harder. Coal can heat homes and power trains.
Answer: Classification\
Explanation:
Classification is the arrangement of organisms into orderly groups based on their similarities. In order to classify an organism, a biologist must use a system that groups organisms according to shared characteristics and their relationships between one another.
Answer:
in the Air sacs
Explanation:
the air sacs has a million tiny holes and that is probably where oxygen transfers
