Proto-oncogenes proto-oncogenes normally suppress tumor growth are produced by somatic mutations induced by carcinogenic substances are underexpressed in cancer cells stimulate normal cell growth and division were initially introduced into eukaryotic cells by retroviruses

Which of the following will not cause mass extinction? a. drastic change is weather b. geological change c. both a and b d. none of the above

The graph below compares the rates of reaction of a burning candle and an exploding firework. comparing chemical reactions what can you conclude from the graph? the reaction that causes a firework to explode requires less energy to start, and occurs more rapidly than the reaction that causes a candle to burn. the reaction that causes a firework to explode requires less energy to start, and occurs less rapidly than the reaction that causes a candle to burn. the reaction that causes a firework to explode requires more energy to start, and occurs less rapidly than the reaction that causes a candle to burn. the reaction that causes a firework to explode requires more energy to start, and occurs more rapidly than the reaction that causes a candle to burn. mark this and return

Of your good in bio kusing a series of preliminary observations; pstate a problem developed from these observations, formulate a hypothesis, design an experiment to test the hypothesis