Question

Which two human activities are believed to be the greatest contributors to global warming?

nonnative species introduction and the burning of fossil fuels
deforestation and the burning of fossil fuels
deforestation and nonnative species introduction
non-sustainable harvesting and nonnative species introduction

Answer 1

Answer: Deforestation and the burning of fossil fuels

Step-by-step explanation:

Answer 2

Deforestation and the burning of fossil fuels

Step-by-step explanation:

Deforestation leads to less carbon dioxide to oxygen production, and burning fossil fuels releases large amounts of carbon dioxide.