Answer: Can you, please, explain what experiment?
Explanation:
Its b. Ecosystem
Population is the number of a species in an area, it has nothing to do with physical characteristics.
Abiotic is just an adjective meaning not alive
Competition is just the interactions between organisms in the struggle for food, water, space, mates, and many other things again not physical characteristics
Answer:
C. Melting and Solidification
Explanation:
Answer:
Oil and gas production are among the main culprits of air pollution – one of the world's biggest killers according to the United Nations. When fossil fuels are burned by power plants, automobiles and industrial facilities, they generate toxic gases.