Answer: c. grass (producer)
Out of the three, only 1 is acidic because litmus paper turns red in acidic compounds and blue in basic compounds.
Explanation:
Hormone production and release are primarily controlled by negative feedback. In negative feedback systems, a stimulus causes the release of a substance whose effects then inhibit further release. In this way, the concentration of hormones in blood is maintained within a narrow range.
Answer:
The drops of water in the clouds are heavy enough to fall.
Explanation:
Precipitation forms in the clouds when water vapor condenses into droplets of water. When the droplets are heavy, they fall to the Earth. These droplets can fall in the form of rain, hail, or snow.
