Answer:Carbon dioxide accounts for most of the nation's emissions and most of the increase since 1990. Transportation is the largest source of greenhouse gas emissions in the United States, followed by electricity generation.
Explanation:
Answer:
yes it's called a basic unit of life
Explanation:
the cellular level of an organism is where the metabolic processes occur that keep the organism alive
Answer:
The calorific value of a fuel is expressed in kilojoules per kilogram (kJ/kg)
Answer:
2 or more substances or ingredients coming together to create one.
Explanation:
