The sewing needle should float in the water if placed on a horizontal angle if I remember properly.
I hope this helps in some way.
Answer:
The rate of photosynthesis varies with light intensity and temperature.
Explanation:
The rate of photosynthesis varies with light intensity.it decreases as light intensity decreases and increase s as light intensity increases. However at much higher light intensity rate of photosynthesis becomes constant.
The rate of photosynthesis decreases with decrease in temperature.It increases as temperature is increased over a limit. But if light intensity is low increase of temperature has little influence on rate of photosynthesis.
First you have to make a hypothesis and all the other scientific steps to go with your scientific question then you can start your investigation
<span>2) along specific belts within the crust</span>
