As a person exercises, carbon dioxide (co2) levels in the blood increase. this causes the nervous system to signal which of these systems to respond? a digestive and immune b immune and respiratory c respiratory and circulatory d circulatory and endocrine

Lactic acid and energy are produced in muscle cells during choose 1 aerobic respiration cellular respiration anaerobic respiration cellular division

Some tools have graduations to show multiple measurements. for example, a ruler may have graduations for both millimeters and centimeters. when measuring the length of an earthworm, which graduations would allow for the most accurate measurement? millimeters centimeters decimeters meters

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