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science
preparing for a science test
| fill in the blank | answers |
|---|---|
| The biotic and abiotic parts of the environment make up a(n) ________________. | Ecosystem |
| A(n) _____________ is a geographic area on earth that contains ecosystems with similar biotic and abiotic features. | Biome |
| Area classified as the same biome have similar _____________ and ________________. | Climates, Organisms |
| ______________ are biomes that receive very little rain. | Deserts |
| Deserts have large patches of ______________ that are bare. | Ground |
| Most animals avoid ____________ during the hottest parts of the day. | Activity |
| Plants have ____________ roots to absorb water quickly. | Shallow |
| ______________ biomes are areas where grasses are the dominant plant. | Grassland |
| _____________, fertile soils support plant growth in grasslands. | Deep |
| Trees grow along ______________ banks of streams and rivers | Moist |
| __________________ bloom during the wet seasons. | Wild flowers |
| Tropical rain forests receive ______________ amounts of of rain and have dense growths of tall, leafy trees. | Large |
| ____________ of earth's species live in tropical rain forests. Most live in the __________________, which is the uppermost part of the forest. | Half,Canopy |
| For lumber, farms, and ranches, people have ___________ more than half of earth's tropical rain forests. | cleared |
| Regions of earth between the tropics and the polar circles are _________________ regions. | Temperate |
| Temperate rain forests are moist ecosystems located mostly in _____________ areas. | Costal |
| Winters are mild and rainy, and summers are _____________________. | Cool and Fogy |
| Forests are dominated by spruce, hemlock, cedar, fir, and ________________ trees, which can grow very large and tall. | Red wood |
| Winter temperatures are often _______________, and summers are hot and humid. | Below freezing |
| In _________ forests, most plants stop growing during the winter and begin growing again in the spring. | temperate deciduous |
| Some animals in temperate deciduous forests seen the winter in _____________. | hibernation |
| The taiga biome exists only in the _______________ hemisphere. | northern |
| The taiga biome occupies more__________ than any other land biome on Earth. | space |
| Winters in the taiga are long, cold, and _________. Summers are short, warm, and _______. | snowy, moist |
| The taiga soil is thin and ________. | acidic |
| The tundra is cold, dry and treeless. Most tundra is south of the _________ Pole, but it also exists in mountainous areas at ________ altitudes. | north, high |
| Because of the cold climate, the growing season is only 50 to __ days. | 60 |
| A layer of permanently frozen soil called ________ prevents deep growth of plant roots. | permafrost |
| There are four types of _____, or aquatic, ecosystems: fresh water, wetland, estuary, and oceans | Water |
| Important ____ factors in aquatic ecosystems include temperature, sunlight, and dissolved oxygen gas. | Abiotic |
| ________ is the amount of salt dissolved in water. | Salinity |
| Water in saltwater ecosystems has high _________ compared to water in freshwater ecosystems. | Salinities |
| Rivers are __________, deeper and flow more slowly than streams | Larger |
| Streams usually have high _________ levels because air mixes into the water as it splashes over rocks | Oxygen |
| Soil that washes into a river from streams or nearby land can add _________ to the water. | Nutrients |
| ____________ plants at dams on rivers use the energy in flowing water to generate electricity | Hydroelectric |
| Ponds and lakes contain freshwater that is not ________________________ are larger and deeper then ______________. | Flowing downhill, Ponds |
| Surface water in ponds & lakes contains plants, algae, & microscopic organisms that use sunlights for ________________. Fewer organisms live in the deeper, colder water of lakes where there is little _________________. | Photosynthesis, Sunlight |
| Runoff from farms, gardens, & roads washes _____ into ponds and lakes, disrupting food ____________. | webs |
| _____________ are aquatic ecosystems that have a thin layer of water covering soil that is wet most of the time. | wetlands |
| Wetlands are among Earth's most ___________ ecosystem. | fertile |
| ________ wetlands form at edges of lakes & ponds and in low areas on land. __________ wetlands for along ocean coasts | Freshwater, Saltwater |
| More then _____ of American bird species use wetlands for nesting and feeding | 1/3 |
| People have ____________ wetlands to build homes and roads and to raise crops. | drained |
| ______ are regions along coastlines where streams rivers flow into a body of salt water | estuaries |
| ______ of estuaries varies, depending on rainfall, the amount of freshwater flowing from land, and the amount of salt water pushed in by______. | salinity, tides |
| Destruction of estuaries reduce habitat for estuary species and exposes the coastline to ______ & storm damage | floods |
| Many species of birds depend on estuaries for ______, nesting & feeding | breeding |
| The ______ starts several kilometers from the coast. | open-ocean |
| The open ocean extends from the steep edges _____ to the deepest parts of the ocean | continental shelves |
| Microscopic algae & other producers in the sunlit zone form the base of most ocean ________ | food chains |
| _______ oceans include several types of ecosystems, including continental shelves and intertidal zones. | coastal |
| The _______ is the ocean shore between the lowest low tide & the highest high tide. | intertidal zone |
| Intertidal species have _______ for surviving exposure to air & to heavy waves. | adaptions |
| A _______ is a underwater structure made from outside skeletons of tiny, soft-bodied animals. | coral reef |
| Most coral reefs form in shallow ______ oceans. | tropical |
| what ecosystem would not be classified as a freshwater ecosystem? | open ocean |
| What distinguishes a pond from a lake? | Lakes are deeper and larger. |
| which ecosystem would an organism that is adapted to daily changes in salinity most likely be found? | estuary |
| What is one characteristic of the coastal ocean biome? | The coastal biome supports life that inhabits more shallow waters. |
| How far away can a wolf be before it can pick up the scent of it's prey? | 10 miles away |
| What is a predator? | A predator is an animal that eats other animals |
| What is a prey? | an animal that is hunted and killed by another for food. |
| For a(n) __________ to be healthy, it has to have lots of different kinds of plants and animals. | Ecosystem |
| _______% of the world is covered by water. | 71 |
| _______ of all the species in the world live in the ocean. | 2/3 |
Created by:
Tjacks
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