Water flows downward through a vertical 10-mm-diametergalvanized iron pipe with an average velocity of 5.0 m/s and exitsas a free jet. There is a small hole in the pipe 4 m above the outlet.Will water leak out of the pipe through this hole, or will air enterinto the pipe through the hole? Repeat the problem if the averagevelocity is 0.5 m/s.
February 1, 2016 Organism and Population Ecology and Evolution Population: a group of individuals from the same species who occupy a specific geographic location Population growth: European rabbit in Australia o Nonnative with few predators o Population exploded Genetic Change o DNA controls growth an development o Environment can alter DNA Frogs in Great Lakes Pesticides The Cell: Fundamental unit of life o Cell structure categorizes: o Prokaryotes Small, single celled, DNA in a single chromosome Bacteria and archaea are prokaryotic cells o In a prokaryotic cell, the DNA is coiled into a region called the nucleoid (nucleuslike) and no membrane surrounds the DNA. o Eukaryotes Single or multicelled Membraneenclosed organelles DNA in multiple chromosomes Plants, animals, fungi and protists are eukaryotic cells. A eukaryotic cell contains a membraneenclosed nucleus and various other organelles (“little organs”), which perform specific functions in the cell. The nucleus and ribosomes are involved in the genetic control of the cell. The nucleus contains most of the cell’s DNA o The endoplasmic reticulum, Golgi apparatus, lysosomes, vacuoles, and peroxisomes are involved in the manufac