People of central Africa predicted the weather by A) recording ...

[Charlie]

People of central Africa predicted the weather by
 
  A) recording the seasonal changes in average temperature.
  B) observing the location of the Moon relative to the Sun in the sky.
  C) observing the path of the planets across the sky.
  D) observing the orientation of the crescent moon relative to the horizon.
  E) observing the length of the lunar cycle.

Question 2

The Schwarzschild radius of a black hole depends on ________.
 
  A) the way in which the black hole formed
  B) both the mass and chemical composition of the black hole
  C) only the mass of the black hole
  D) the observationally measured radius of the black hole

[Li Jun]

Answer to Question 1

D

Answer to Question 2

C

[Charlie]

Gracias!

[Missbam101]

TYSM