Colors, sizes, and shapes vary a lot throughout fish, but there are some common structures among most of them, can you put one together?
What are the main parts of every adult insect? can you put them together?
Are we part of food webs? what happens when a a population drastically reduces or even goes extinct?
Carbon fixation in plants is quite important, is the process by which inorganic carbon is added to an organic molecule. So, what is the most important part of a plant?
Electricity generation either comes from fossil fuels (coal, natural gas, and petroleum), nuclear energy, and renewable energy, what's your source?
20.000 kWh covers what is necessary for sustaining a minimum standard of living, how much do you consume?
Cheap, trendy clothing that samples ideas from the catwalk or celebrity culture, how often do you buy clothes?