What causes summer here in the northern hemisphere? In the summer, at this point?

Question

a. the Earth is closer to the sun.
b. the Earth's northern hemisphere is tilted toward the sun.
c. the Earth's northern hemisphere is tilted away from the sun.

Answer 1

B. That's why it is winter in the southern hemisphere when it's summer in the northern hemisphere and vice versa.

Answer 2

Definitely B.

Answer 3

B.

durhh!