Atypical white dwarf has a mass approximate to and is about the same size as

In addition to seeds, which of the following characteristics are unique to the seed-producing plants? a) sporopollenin b) lignin present in cell walls c) pollen d) use of air currents as a dispersal agent e) megaphylls

Plants that have reproductive structures called cones are?

Nucleic acid certain protein cell membranes certain carbohydrates