Based on the following options, which option best explains why the Earth's tilt causes a variation in seasons?

What is the answer for the complicated molecules that make up living things usually contain carbon. why is carbon so important in these molecules?

Which blood cell spend most of their time in the lymphatic system?

How are the reproductive cycles of a fungus and a pteridophyte similar? a)both organisms form fruiting bodies that produce diploid seeds. b)both organisms produce haploid spores and exhibit diploid and haploid stages. c)both organisms reproduce sexually when two haploid hyphae fuse. d)both organisms exhibit a diploid stage and are only able to reproduce asexually.