Rosa has a vegetable garden. she places earthworms, which are decomposers, in the garden soil.
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Rosa has a vegetable garden. she places earthworms, which are decomposers, in the garden soil.
what is rosa most likely trying to do?
prevent insects from eating the plants
create usable food energy for the plants
enrich the soil with nutrients
kill the bacteria in the soil
Answers: 2
Biology, 21.06.2019 13:50
Athermometer is placed in water in order to measure the water’s temperature. what would cause the liquid in the thermometer to rise?
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Biology, 21.06.2019 15:50
This organism is not capable of performing photosynthesis. (horseshoe crab) true false
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Biology, 21.06.2019 23:00
Development of new communities in disturbed environments, such as a burned or a clear cut forest, is called
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Biology, 22.06.2019 03:30
Rease is an enzyme used by plants to break down urea (a nitrogen-containing compound) into carbon dioxide and ammonia. urease urea > > > carbon dioxide and ammonia ammonia is broken down by plants into a nitrogen source plants need to grow. thus, plants could not use urea as a nitrogen source unless it was first converted to ammonia. in soybean plants there are two different kinds of urease, one produced in the seeds and the other produced in the leaves of the plant. three types of soybean plants were used in a set of experiments: normal soybeans and two mutant strains, one lacking the urease in the seeds only (strain 1) and one lacking urease in the leaves only (strain 2). experiment 1 separate areas in a field were planted with normal, strain 1, and strain 2 soybeans. all types of soybeans appeared to grow, flower, and produce seeds equally well. there were no externally detectable differences among the strains. experiment 2 small pieces of plant leaves of equal weight were obtained from each type of soybean plant and separately placed on media in culture dishes. tissue growing in this way will become an unorganized clump of cells referred to as callus. to provide a controlled nitrogen source, half the tissue samples of each type were placed on media containing urea, and the other half of the samples were placed on media containing ammonia. after 30 days, the weight gain for each of the callus samples was determined. results are shown in the table below.
Answers: 2
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