Before scientists studied the evolution of living things, people thought that organisms appeared out of the air. Who was the first scientist to develop a scientific system to classify and name living things? A. Mary Anning B. Jean-Baptiste Lamarck C. Carolus Linnaeus D. Charles Lyell

How many species of living things are alive on earth today? more than 1,000,000 none of these answers are correct 100-500 1,000 –500,000 o 500,000 -1,000,000

When analyzing tree rings, what do scientists assume a thin ring indicates?

What is the significance of the protein-lined pits? a. protein attracts other proteins needed for atp synthesis within the cell. b. protein-lined pits are able to transport one molecule at a time down the concentration gradient within the cell. c. the polarity of proteins allows other polar molecules to attach and be transported in the cell by transport channels. d. receptors within the pits allow ligands to fuse and be transported into the cell by endocytosis.