Find and correct the mistakes

1. Solar energy needs to be converted into electricity before we can use it.
2. Will the climate still be in a warming state after greenhouse emissions are stopped?
3. Who is responsible when climate change harms the world's poorest countries?
4. When fossil fuels are burnt, they release greenhouse gases, mostly carbon dioxide.
5. We will contact the people in charge and get back to you as soon as we can.
6. As soon as the snow melts, spring wildflowers push their way up through the leaf litter.
7. Single-use plastic products are thrown away immediately after they have served their purpose.