Could there be life on planets orbiting other stars?

What is used as a template during replication? a- mrna b- trna c- rrna d- dna

What kinds of foods are high in lipids?

Agriculture is changing the environment. with increased populations, there is a greater demand for food. which of the following is not an impact of farming? a) pesticide and fertilizer pollution b) sediment transport and deposition downstream c) increased water supply and flooding d) desertification and deforestation