Answer:
G: exchange gases with the environment
Explanation:
That is a diagram of the human respiratory system, which handles breathing, or exchanging gases with the environment.
"Cell membrane" Outermost layer surrounding the cytoplasm.
Answer:
No, concentration of astmospheric carbon dioxide donot decreasing due to human activity. Human activities cause increases in the concentration of carbondioxode in the environment. A high amount of carbondioxode is released from vehicles and industries etc and disturb the carbon cycle. This increase in the amount, increase global temperature because carbondioxode is a green house gas.
The answer would be damage to plant tissue, since it is still indeterminate to whether plant tissue is affected like we are by UV rays.
The answer to 73 is chipmunks. The answer for 74 is chipmunks and rabbits. The answer to 75 is hawks and wolves.