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the basic unit of function and structure in a living thing |
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the area were things are packeged and made ready to travel to other parts of the cell and to other cells
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where respiration occurs and energy is made
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Explaining or interperting your observations |
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using one or more of your senses to gather information |
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grouping similar items together |
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A representation of complex objects or processes that may be difficult to explain |
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the ability to accept new ideas or different ideas |
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attitude of doubt or disbelief to balance the open mindedness |
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the eagerness to learn more about what you are studying |
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the ability to report observations and results truthfully |
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coming up with new ways to solve problems |
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an observation of an amount of something |
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a description of something you observed |
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the different ways scientists study the univere, collect evidence, and suggest explainations for how the universe works |
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an educated guess that can be tested, it is based off observations |
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there are no more than two variables, only one variable changes |
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the variable you change on purpose |
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a variable that changes in response to the other variable, not changed on purpose |
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a well-tested explanation for a variety of observations or experimental results |
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a statement that describes what scientists expect to happen everytime certain experiments are performed |
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the perserved remains or traces of animals that had lived in the past |
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traits that help an organism survive and reproduce |
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the process by which individuals that are more likely to survive, reproduce, and pass on their traits to the next generation |
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any difference between individuals of the same species |
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more offspring are produced than needed |
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the struggle within a species for food and other resources |
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some variations that occur over time help species become better adapted to their environment so that they can survive |
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ecological adjustments that affect an organisms ability to survive, can lead to selection |
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the gradual change in a species over time |
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6 H2O + 6 CO2 + Sun's Energy --> 6 O2 + C6H12O6 |
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Similar structures that have led scientists to think that they were inherited from a common ancestor |
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Calander of earth's history of life |
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when a group of individuals remain isolated from the rest of their species long enough to evolve different traits, becoming a new species |
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How fast does evolution occur? |
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Two theories: - Gradualism
- Punctuated Equilibrium
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evolution occurs slowly but steadily - small changes gradually add up to big changes over time
- there should be intermediate forms between a fossil and its decendant [image]
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evolution occures in short quick changes followed by long periods of no change - no intermidiate forms
- [image]
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the study of how living things interact with eachother and their environment |
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a community of organisms that live in one area |
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an environment that provides the things an organism needs to survive (live, grow, make kids) |
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the living parts of a habitat - the animals or people that live there
- the plants
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the non-living parts of an environment - water
- sunlight
- oxygen (O2)
- temperature
- soil
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- all living things need water to carry out life processes
- H2O makes up most of our bodies and organism's bodies
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what most organisms and all humans breath in |
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- needed by plants & algae to do photosynthesis
- other organisms who don't do photosynthesis rely on these plants to get energy
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determines what organisms can survive in a particular habitat |
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- mixture of rock fragments, nutrients, air, H2O, decaying remains of dead organisms
- how much of each ingredient determines what organisms can live in the soil
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Levels of Organization-(smallest--largest) |
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- organism
- population
- community
- ecosystem
- Biosphere
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an individual living thing |
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all the members of one species living in a particular area |
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