Name a single cell which may constitute a whole organisms. what are they called?

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.

What is the difference between an igneous, sedimentary and metamorphic rock

The pelican's beak is adapted for in .