письменно переведите на российский язык следующие предложения. Определите видо-временнную форму

Письменно переведите на российский язык последующие предложения. Обусловьте видо-временнную форму и залог сказуемого
1. Fossil fuels were created by the decomposition of primitive organisms.
2. Deposits of coal, oil and gas are now found below ground in many areas of the world.
3. Cars have been designed that burn gasoline more cleanly and efficiently, with better filtering mechanisms.
4. This material is unaffected by solar radiation.