Choose two types of abnormal weather conditions and say what they have in common and how are they different into paragraphs one showing what they have in common and one paragraph showing how they are different

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 consume most of their carbon from a. the soil b. the water c. the roots d. the air

You are working in the lab and are working with the same element but with varying isotopes of the element. you are working with c-11, c-13, c-14, and c-15. what is the average atomic mass of this element? (use periodic table) a- 12 b-15 c-14 d-13