Give reasons for 5 stars! Animals living in both air and water exist in a fluid

Question

Give reasons for 5 stars!

Animals living in both air and water exist in a fluid medium, where motion of the fluid is a characteristic property of the environment. Blue crabs have maximum sensory detection when facing current, as shown in the left crab photo below, however, crab orientation to flow also affects the hydrodynamic forces they experience. The graph on the right shows the drag acting on crabs placed at different angles to the flow (y = -0.007x + 1.1; r2 = 0.84; p < 0.001). Answer the following questions:

1. What is/are the independent variable(s)?

A) flow rate

B) drag

C) both A and B

D) crab angle

2. What is/are the dependent variable(s)?

A) flow rate

B) drag

C) both A and B

D) crab angle

3. Is the relationship between crab angle and drag (if any) statistically significant?

A) yes

B) no, but almost

C) not even close

D) cannot be determined

4. What evidence did you use to determine your answer to the previous question?

A) y = -0.007x + 1.1

B) r2 = 0.84

C) p < 0.001

D) visual inspection of the data

Explanation / Answer

C) both A and B.

D) crab angle.

A) yes.

y = -0.007x + 1.1

Related Questions

Navigate

• Browse (All)
• Browse G
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.