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| science is an organized way of gathering and analyzing evidence about the natural world. |
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| A observation is the act of noticing and describing events or processes in a careful, orderly way. |
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| A inference is a logical interpretation based on what scientists already know. |
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| A hypothesis is a scientific explanation for a set of observations that can be tested in ways that support or rejected it. |
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| is a experiment in which only one variable is changed |
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| The variable that is deliberately changed. |
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| The variable that is observed and that changes in response to the independent variable |
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| A control group is exposed to the same conditions as the experiment group except for one independent variable |
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| scientists make detailed records of experimental observations, gathering information. |
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| Autotrophs use solar or chemical energy to produce "food" by assembling inorganic compounds into complex organic molecules |
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| Primary producers are the first of energy-rich compounds that are later used by other organisms |
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| Captures light energy and uses it to power chemical reactions that convert carbon dioxide and water into oxygen and energy-rich carbohydrates such as sugars and straches |
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| In which chemical energy is used to produce carbohydrates. Are found in the deepest, darkest ocean. |
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| Must acquire energy from other organisms by ingesting them in one way or another. |
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| Organisms that rely on other organisms for energy and nutrients are called consumers |
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| They kill and eat other animals. Carnivores include snakes, dogs, cats, and this giant river otter |
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| Like this military macaw obtain energy and nutrients by eating plants leaves, roots, seeds, or fruits |
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| Are animal that consume the carcasses of other animals that have been killed by predators or have died of other causes |
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| Are animals whose diets naturally include a variety of different foods that usually include both plants and animals |
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| Such as bacteria and fungi "feed" by chemically breaking down organic matter. The decay caused by decomposers is part of the process that produces detritus |
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| Like giant earthworm feed on detritus particles, often chewing or grinding them into smaller pieces |
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