Question 33 The recent increase in global temperature that is promoting a greenhouse effect is primarily due to
А
an increase in solar activity
B
volcanic eruptions
С
an increase in forest area
D
the burning of fossil fuels

The picture below shows two galaxies. spiral galaxy and elliptical galaxy which of these statements best describes a similarity between the two galaxies? (2 points) both have elongated centers. both have centers shaped like bars. both change their shape from time to time. both are held together by gravitational forces.