Select the correct answer. How does a proper warm up affect blood flow?
A.
Blood flow increases.
B.
Blood flow decreases.
C.
Blood flow increases and then decreases.
D.
Blood flow decreases and then increases.

Desiree has a scientific question that she wants to investigate. she has developed a hypothesis and method for her experiment. which step of scientific inquiry should desiree take next? desiree should present her findings to her teacher and classmates. desiree should collect data, which may support or refute her hypothesis. desiree should provide an explanation for her results.