Choose the best answer.
Enough water to digest stored food and enable growth of embryo
Pesticides and herbicides
Oxygen for the seedling to carry out aerobic respiration
Temperature of 15-20 degrees Celsius
A, C and D are correct
Oxygen
Nitrogen
Hydrogen
None of the above
Protein
Calcium
Sun
Water
Percentage of Phosphorus
Percentage of Nitrogen
Percentage of Protein
None of the above
Phosphates
Nitrogen
Oxygen
None of the above
True
False
Biological magnification is when substances become more concentrated in organisms at higher trophic levels.
Biological magnification is when substances become less concentrated in organisms at lower trophic levels.
Biological magnification is when organisms become more concentrated in substances at higher trophic levels.
None of the above
True
False
Cocoa plant and aloe vera
Dandelion and white willow
Cinnamon and ginger
All of the above
True
False
True
False
Crop rotation and using cover crops
Reducing tillage and avoiding traffic on wet soil
Planting pest-resistant crops and raising farm animals and plants on thesame farms
All of the above can be taken to improve water quality and avoid soil nutrient depletion.
True
False
Plants that cover the soil do not allow the Sun to evaporate water from the soil.
Alternating one crop for a more drought-tolerant crop.
Avoiding accidental spill of damaging materials.
None of the above
Tillage
Planting
Sun Coverage
B and C
True
False
True
False
Wetlands
Farmlands
Boreal Forests
None of the above
True
False
Planting crops that will hold the soil in place.
Use environmentally friendly products
Use more pesticides and herbicides.
B and C are correct
Pesticide
Herbicide
Biological Magnification
A and B
Pesticides
Herbicides
Biological Magnification
A and B
The the use of chemicals is very harmful to our health
That if more people bought organic food, the price would eventually drop to more affordable levels
None of the above
A and B
True
False
True
False
Boreal Forests
Tundra Forests
Appalachian Forests
Temperate Forests
There are no tress in boreal forests.
Deciduous trees
Cone-bearing trees
B and C
Because they can be broken down by other living things without harmful results.
It pollutes the streams and groundwater.
It is not better to use plants as insecticides.
None of the above
Gum
Latex
Chichle
A and B
Gums
Latex
DDT
Cuts
Resin
Gum
Latex
Chicle
True
False
Marshes, Swamps and Peatlands
Marshes, Swamps, and forests
Hydroponics, Swamps and Forests
None of the above
Runoff
Sewage
Groundwater
None of the above
Filtration
Bioremediation
Sewage System
Run off
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