What are the properties of carbon that make it suitable for forming large macromolecules?

Based on the results of this study, what questions remain unanswered? how can these questions guide future research

Consider darwin's first writings on the theory of natural selection. an important point of darwin's essay on the principle of population, written in 1798, was a peer's observation that in nature plants and animals produce far more offspring than can survive, this observation can be attributed to a) charles lyell. b) thomas malthus. c) jean-baptiste lamarck. d) johann friedrich meckel.

Which sequence correctly shows the path of carbon dioxide during repiration?