An enzyme is a protein that-A. increases the rate of a chemical reaction b. transports nutrients across a membrane
C. provides structure for the cell's organelles
D. receives and sends signals across a cell

The galapagos island contain 13 species of finches four of the species are seen here it is believed that all of the species had one common ancestor and overtime

2. how does the miller-urey experiment fall short of demonstrating that life can arise from inorganic molecules? explain. a. it doesn't show a leap between a collection of amino acids and a single-celled organism. b. it recreates the conditions that existed at the earth's beginning, but no molecules form as a result. c. it doesn't provide evidence of the formation of amino acids. d. it doesn't show how multicellular organisms developed from unicellular organisms

How is the carbon cycle related to global warming ?