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slavikrds [6]
3 years ago
12

Sam and his Dad were trying to combat the fire ants in the backyard. They tried several brands of fire ant "killing" chemicals b

ut none worked. Finally, Sam's Dad decided to try an old-time idea: pouring grits on the mounds.
What question could be used to guide Sam's study of fire ants?
Biology
1 answer:
Anarel [89]3 years ago
5 0
Why does plain grits work better than chemicals that are supposed to be for killing ants.
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The smooth but steady increase in muscular tension that is produced by increasing the number of active motor units is called ___
Troyanec [42]

The smooth, but steady, increase in muscular tension produced by increasing the number of active motor units is called a recruitment.

Muscle tension is the force produced when a muscle contracts (or when sarcomeres shorten). The two primary forms of skeletal muscle contractions, isotonic contractions and isometric contractions, are produced when a muscle contracts against a load that is not moving.

  1. A load is transported as the length of the muscle varies during isotonic contractions, in which the tension in the muscle remains constant (shortens). Concentric and eccentric contractions are the two varieties of isotonic contractions.
  2. When a muscle contracts isometrically, the angle of a skeletal joint remains the same while tension is produced in the muscle. Sarcomeres shorten and muscles tense up during isometric contractions, but the load is not moved since the force generated is insufficient to overcome the resistance provided by the load.

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3 0
1 year ago
which statement is a hypothesis? A)If the temperature increases, then crickets will chirp more. B)crickets are cooler than grass
Leto [7]

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C) Does the temperature affect how much crickets chirp

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Edxcel alevel biology past papers: some of the blood plasma of individuals who have survived infection wtih Ebola can be collect
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This was the only treatment options adopted for the Ebola in  1995 in the Democratic Republic of Congo. The assumption was that immune response is generated by the virus in the WBC of the infected individuals. These response produce antibodies.

A total if 8 patients were transfused with these blood contained antibodies, but one of these died, the remaining 7 patients survived.

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