Scientists have noted that at present the earth is closest to the sun in january and farthest from the sun in july. the reverse will be true in 13,000 years and the earth will be closer to the sun in july than january. how would this change affect the climate in the northern hemisphere. a. winters would be cooler and summers warmer because of the closer proximity of the earth to the sun. b. winters would be warmer and summers cooler because of the closer proximity of the earth to the sun. c. winters would be shorter and summer longer because of the closer proximity of the earth to the sun. d. winters would be longer and summers shorter because of the closer proximity of the earth to the sun.

World class speed skaters can skate a 3,000-m course in about 4 minutes. what is their average speed for this course. a. 12.5m/s b. 1.33m/s c. 13.3m/s d. 1.25m/s

When in solution, a molecule that moves slowly across an artificial membrane moves rapidly across a plasma membrane. this molecule rapidly enters the cell regardless of whether its concentration is higher inside or outside the cell. using this information, which transport mechanism is most likely to be responsible for the movement of the molecule across a plasma membrane? view available hint(s)when in solution, a molecule that moves slowly across an artificial membrane moves rapidly across a plasma membrane. this molecule rapidly enters the cell regardless of whether its concentration is higher inside or outside the cell. using this information, which transport mechanism is most likely to be responsible for the movement of the molecule across a plasma membrane? active transportexocytosis

How does the human body lever work?