The brain send signals that control the speed at which food moves through the digestive system. What systems are involved? A. Circulatory, Immune, digestive
B. Muscular, Digestive, Immune
C. Digestive, Muscular, Nervous
D. Respiratory, Endocrine, Digestive

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?

To store strawberries in sugar syrup, lucy placed them in a jar and covered them with sugar but did not add any water. do you think syrup will be formed? justify. a. no. since water is not added, there cannot be any syrup formation. b. no. the higher concentration of sugar on the outside will cause the water from the sugar to diffuse in the strawberry cells causing them to swell without formation of any syrup. c. yes. the higher concentration of sugar on the outside will cause the water from the strawberry to diffuse out resulting in syrup formation. d. yes. the sugar will melt over time and form the syrup.

Explain why it’s important for scientists to study the sun. list at least two challenges researchers face when examining earth’s nearest star.