Answer: D. helps in digestion
Explanation: Gastric juice in the stomach contains HCL which creates an acidic condition(pH1.5-2.0) which is optimal for the action of enzymes in the stomach. HCL stops the activity of salivary amylase & helps to kill bacteria in food. It doesn’t help in digestion cuz it is not an enzyme.
The phloem is essential for transporting sugars the plant has made to other areas of the plant, this is necessary as some areas of the plant cannot perform photosynthesis or perform it at a much slower rate. E.g. the roots can't perform photosynthesis to get the sugars it needs because they aren't exposed to light, but they still need energy to function and without sugar transport by the phloem they would not get this so areas of the plant would die
Answer:
"The Skeletal system has three very important jobs: Support, protection, and movement. Just think, if we did not have a skeletal system for support we would be just like a blob of Jell-O. The bones also protect many organs, and also the brain."
Explanation:
Because the sun is really hot and we'd die if they weren't there
