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science 7th vocab
Question | Answer |
---|---|
biome | a group of ecosystems with similiar climates and organisms. |
canopy | a leafy roof formed by tall trees. |
understory | a layer of shorter plants that grow in the shade of a forest canopy. |
desert | an area that recieves less than 25cm of precipitation a year. |
grassland | an area populated by grasses that gets 25 to 75cm of rain each year. |
savanna | a grassland close to the equator. |
decidious trees | trees that shed their leaves and grow new ones each year. |
hibernation | a low energy state similiar to sleep that some mammals enter in the winter. |
coniferous trees | trees that reproduce their seeds in cones and have needle shaped leaves. |
tundra | an extremely cold, dry biome. |
permafrost | soil that is frozen all year. |
estuary | a habitat in which the fresh water of a river meets the salt water of the ocean. |
intertidal zone | between the highest high tide line and the lowest low tide line. |
neritic zone | the region of shallow ocean water over the continental shelf. |
succession | series of predictable changes that occur in a community over time. |
primary succession | the changes that occur in an area where no ecosystem had existed. |