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Korvikt [17]
2 years ago
5

a student placed a stack of rocks on a ramp. she added clumps of soil rooted with live grass. using a garden hose, she then appl

ied a steady spray of water that soaked into the soil, making it heavier. what does the students experiment model

Biology
1 answer:
Arlecino [84]2 years ago
7 0

Answer:b

Explanation:

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Twenty fruit flies are placed in each of four glass tubes. The tubes are sealed. Tubes I and II are partially covered with black
Andreyy89

Answer:

Explanation:Twenty fruit flies are placed in each of four glass tubes. The tubes are sealed. Tubes I and II are partially covered with black paper; Tubes III and IV are not covered. The tubes are placed as shown. Then they are exposed to blue light for five minutes. The number of flies in the uncovered part of each tube is shown in the drawing.

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5 0
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(d) Researchers discovered a strain of C. Parvum that expresses a functional variation of the lactate dehydrogenase gene. A DNA
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