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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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