Which of the following is an effect of el niño? a. hurricaines
b. floods
c. droughts
d. a and b only
e. a, b, and c

D. But I might be wrong I only know form what Iv experienced

Geothermic gradient is the rate of increasing temperature with respect to increasing the depth in the earths interior. away from tech tonic plates boundaries, it is about 25-40 c/km (72-87 degrees f/mi) of depth near the surface in most of the world.

Answer (d) may increase or decrease porosity through dissolution or deposition;