5th - Science - Ch 4A - Lesson 4 Review
About this set
Created by:
mswildcat Plus on January 13, 2012
Subjects:
Log in to favorite or report as inappropriate.
Order by
22 terms
Terms | Definitions |
|---|---|
 same | In an ecosystem, the amount of material stays about the ________________. |
| ecosystem | Everything in an ________________ can be used over and over again. |
| energy | In an ecosystem, the consumers eat the producers and use _____________ from them to grow. |
| carbon dioxide | Producers need ________________, which consumers give off. |
| water | During phtosynthesis, producers use light energy to change carbon dioxide and _____________ into sugar and water. |
| respiration | The opposite of photosynthesis is __________. |
| sugar + oxygen | The chemical equation for photosynthesis is energy from sunlight + carbon dioxide + water = ______________ + _____________. |
| energy + water | The chemical equation for respiration is: sugar + oxygen = carbon dioxide + _____ + ______. |
| photosynthesis and respiration | two processes that are part of the carbon dioxide-oxygen cycle |
| nitrogen | Another important cycle is the ____________ cycle. |
| nitrogen | _____________ is part of all proteins |
| proteins | _____________ are the materials cells use for growth and repair. |
| stays the same | Nitrogen is used over and over so that the amount of nitrogen _____________. |
| gas | Nearly 80% of the air we breathe is nitrogen ____________. |
| compounds | Most organisms need nitrogen gas to change into nitrogen ________________. |
| lightening and bacteria | 2 ways to change nitrogen gas into nitrogen compounds |
| food web | When animals eat plants and then are eaten by another animal, the usable nitrogen flows through the ____________. |
| soil | When decomposers break down wastes and dead organisms, they return nitrogen compounds to the _____________. |
| nitrogen gas | Some bacteria that live in the soil can then change nitrogen compounds back into ___________. |
| nitrogen cycle | The ____________ is the cycle that changes nitrogen gas into nitrogen compounds and the back into nitrogen gas. |
| water cycle | The _____________ is when water evaporates from the ground, condensation forms in clouds, and precipitation falls to the ground. |
| living and nonliving | Water cycles through the __________ and ______________ parts of an ecosystem so no new water is needed. |
First Time Here?
Welcome to Quizlet, a fun, free place to study. Try these flashcards, find others to study, or make your own.