The el niño southern oscillation phenomenon provides good opportunities to study:
a) global warming
b) prevention, preparedness and mitigation of el niño-induced disasters
c) starvation in third world countries
d) effects of climate variability on human health

sadness is not good

explanation:

answer: although many types of viruses can cause a common cold, rhinoviruses are the most common culprit. a cold virus enters your body through your mouth, eyes or nose. the virus can spread through droplets in the air when someone who is sick coughs, sneezes or talks. theres your answer

explanation: