1. Environmental problems and solutions:
a) Air pollution: Using public transportation or electric vehicles, using energy-efficient appliances, reducing industrial emissions.
b) Water pollution: Proper disposal of waste, avoiding plastic use, using eco-friendly cleaning products, avoiding hazardous chemicals.
c) Deforestation: Planting trees, supporting sustainable logging, promoting conservation efforts, reducing paper usage.
d) Climate change: Using renewable energy sources, reducing carbon footprint, supporting green initiatives, promoting sustainable lifestyles.

2. Some rubbish that can be recycled includes paper, cardboard, glass, metal, and plastic. However, it is important to check with your local recycling center to see what specific items they accept.

3. To protect the environment, individuals can: a) Reduce energy consumption: Turn off lights and appliances when not in use, use energy-efficient bulbs and appliances. b) Reduce water consumption: Fix leaks, take shorter showers, turn off taps when not in use. c) Reduce waste: Recycle, compost, donate unwanted items, avoid single-use plastics. d) Support eco-friendly initiatives: Use public transportation, support companies with environmentally friendly practices, participate in community clean-up efforts.