What statement could explain why viruses were not the first to evolve?

viruses are parasites
viruses have to infect a living cell in order to reproduce
viruses have no cell membrane
viruses contain either dna or rna

What process allows for the development of haploid sex cells? mitosis meiosis fertilization pollination

Some technological solutions to problems like global warming meet the specific needs and situations of local communities. an example from india involves converting the solid waste from cattle into clean-burning fuel for cooking. this reduces the amount of greenhouse gases, specifically methane and carbon dioxide, released into the environment from wood fires. when evaluating the feasibility of implementing this solution, computer models are used to weigh costs against benefits. what factor is least likely to impact the decision on adopting this technology?

All vaccination should(n’t) be mandatory! 1.at least 5 sentences explaining 2.why? 3.in the end summarize the sentence