The term "global warming" refers to a. the warming of regions of the earth during the summer b. increased average temperatures on the earth's surface c. changes in temperature as a result of decreased ozone d. daily changes in temperature, from sunrise to sunset

B

Explanation:

increased average temperatures on the Earths surface. i just took the practice test.

B is correct

Explanation:

on edge. :)

d. new methods of assembly are introduced.

explanation:

this allows for the goods to be made on a larger scale. not faster because now it is shown to be made better, hence the greater productivity in the question. it is calling for something new to be introduced.

where are the statements without that i cant you