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18 Cards in this Set
- Front
- Back
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What three things are in soil? |
Minerals, organic particles, humus |
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Over time what can happen if you plow too much? |
Can damage soil |
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Name 3 types of soil |
Sandy soil, clay soil, loam soil |
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What or the two types of fertilizer? |
Organic and chemical |
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Why is crop rotation? |
The practice of planting a different crop in a particular field each year |
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What is irrigation? |
the practice of applying water to crops |
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what does this show? |
Clearing the land |
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What is yield? |
The amount of useful plant material produced per plant, or per area planted in a particular crop |
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Name three human technology to provid the best growing conditions for plants thereby increasing yeilds |
Fertilizer, shelter,artificial environment |
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what is a variety? |
A group of organisms of the same species that have a specific characteristics that can distinguish it from other varieties or that species |
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What is selective breeding? |
A technology for producing new varities of an organism that involves choosing parent with desired traits in order to produce offspring with these traits |
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What is a trait? |
A characteristic of a organism |
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What is genetic engineering? |
A process in which single genes are added to a plants genetic material |
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What is a gene? |
A tiny piece of material in a cells nucleus |
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what is a herbicide? |
Herbicides are chemicals that kill unwanted plants |
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What are pesticides |
Pesticides are substance that kill insects |
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What is biodiversity? |
Is the number of different species in an environment |
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What is environmental management? |
Is balancing the needs of humans with the needs of the environment |
