If you shake sugar and sand in a test tube it makes a mixture.
I would say A because if the ball is rolling down the hill the it won't stop till it hits the bottom.
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Photosynthesis ceases when leaves wilt, mainly because the chlorophyll in wilting leaves is degraded.
claiming that chlorophyll usually deteriorates. Thus, photosynthesis or leaf growth inside the building will stop. Thus, it will end.
Thus, photosynthesis or leaf growth in the building will cease.
- The plant starts to wilt as the dehydrated collapsing cells in the leaves and stems can no longer stand upright. The drooping leaves expose less surface area to the sun's evaporative rays, which is an interesting way that wilting also helps to prevent water loss.
- When roots are unable to adequately hydrate the stems and leaves, plants wilt. Plants are not harmed by wilting when it lasts only a short while. On hot days, a plant may begin to wilt because the moisture is leaving the leaves faster than the roots can absorb it.
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Physical exercise preserves bone mass. Measurements of bone biomarkers may reflect the events in bone during exercise. Fifteen healthy, well-trained individuals (7 men and 8 women) performed a running test for 21 min until exhaustion. Venous blood samples were drawn before and 30 min after the exercise to measure the levels of osteocalcin, the carboxyterminal propeptide of type I procollagen (PICP) and the carboxyterminal cross-linked telopeptide of type I collagen (ICTP). After exercise, the women had a marked increase in serum osteocalcin concentrations (from 7.5±5.0 μg/1 to 11.5±3.0 μg/1), whereas the level was unaffected in the men (from 14.5±3.0 μg/1 to 13.5±4.6 μg/l). In the men there was a marked increase in PICP (from 240±47 μg/1 to 268±56 μg/1) that was not seen in the women (from 244±70 μg/1 to 253±60 μg/1). In neither group did ICTP levels change. In conclusion, significant responses were seen in PICP and osteocalcin during exercise, indicating that such measurements may be valuable for the further delineation of the effects of physical activity on bone. Furthermore, the different responses in men and women point to interesting areas for future studies.