Question

Based on a number of different observations, scientists have developed a theory that human activities contribute significantly to global warming. Which of the following is an observation that was used in the formulation of this theory?

A.The climate of Mars has warmed over the same period as Earth.
B.A large increase in greenhouse gases has occurred as industrial activity has increased.
C.The average temperature of Earth has varied directly with the human population.
D.Average sea level increases as average atmospheric temperature increases.

Answer 1

Answer:

b is the right answer of your question

Answer 2

Answer:

a large increase in greenhouse gases has occurred as industrial activity has increased

average sea level increases as the average atmospheric temperature increases

Explanation:

due to industrial activities many poisonous gases r releasing to the atmosphere. Due to this the temperature of the atmosphere increases and the glaciers r melting thats why sea level is increasing. which may lead to flood.