I think Earth’s atmosphere plus atmosphere. So, 23+48=71. So, the answer is A
Answer:
Environmental Impacts of Climate Change
Climate change may aggravate erosion, decline in organic matter, salinization, soil biodiversity loss, landslides, desertification and flooding. The effect of climate change on soil carbon storage can be related to changing atmospheric CO2 concentrations, increased temperatures and changing precipitation patterns.
Diffusion is the movement of substances from high to low concentration
osmosis is the diffusion of water through a semipermeable membrane from high to low water concentration