| Term | Definition |
|---|
| Dissolved Oxygen | Oxygen in water that is essential for healthy lakes and rivers. The colder the water the greater the amount |
| Fecal Coliform | bacteria found in water. generally from human and animal waste |
| Nitrate | Chemical found in water that can act as a nutrient for plant and algae growth |
| Non point source pollution | Pollution that comes from runoff and cannot be tracked to a single source |
| Point source Pollution | pollution that can be tracked to its source |
| watershed | an area of land that water drains from land back to a body of water |
| Chromosomes | the couled form of DNA and where genes are found |
| clone | an exact copy of a parent organism produced by asexual reproduction |
| gene | segment of DNA tha contains traits of offspring |
| heterozygous | an organism having two different genes for a particular trait |
| homozygous | organism that has two identical alleles for a single trait |
| punnett square | a tool used to make genetic predictions |
| recessive gene | that that do not show their traits when a dominant genes are present |
| dominant gene | the "stronger gene that shows up and is written with a capital letter |
| heredity | the passage of traits from parents to an offspring |
| mutation | a change inthe DNA of an organism |
| Charles Darwin | Famous theorist who after observing animals in nature proposed that natural selection caused evolution |
| evolution | the gradual accumulation of adaptations over time |
| mitosis | cell division in which the nucleus divides into nuclei containg the same number of chromosomes |
| sexual reproduction | the forming of a new organism by joining to two reproductive cells |
| DNA | a nucleic acid found inthe nucleus of a cell and consisting of polymer formed nucleotides and shaped like a double helix: associated with the transmission of genetic information |
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