Answer:
Part 1. The amount of calcium is independent variable.
Explanation:
An independent variable is a variable in an experiment which is changed to see its effects on dependent variable.
In this experiment, to know about the causes of osteoporosis, the Ca level in blood or calcium intake in changed.
So the concentration of calcium will be independent variable.
Part 2.
The risk of bone fractures is could be changed with calcium.
Explanation:
In this experiment osteoporosis or risk of bone fracture is dependent variable.
Dependent variable are results of experiment which can be changed by independent variable.
As in experiment, Calcium concentration is independent variable.
So the risk of osteoporosis depends can change with calcium.
Octopus and squid have little suction cups on their tentacles. It helps with sticking onto food (so it doesn't get away) and also helps with sticking into things. If it wanted to camouflage into some rocks, it can use its tentacles to cling to to the rock.
Tentacles can also grab and carry things. Scientists have made tests where they would put a clam in a jar with the lid screwed on. The octopus would grab onto the jar and use its tentacles to twist the lid off.
Without tentacles, octopuses and squids would be pretty helpless and probably couldn't survive in the deep ocean.
B. Ocetoclast is the answer.
For the answer to the question above, one of the side effects of carbon in the environment is the global warming or Climate change. The Carbon dioxide traps the heat of the sun from escaping the atmosphere. This results to increase in global temperature which causes the ocean water to evaporate than usual and creates super typhoons.
I think from the above answers the most appropriate is that GPS technology has led to development of robotic tractors for planting, fertilization, and crop harvesting. The global positioning system has found a wide and beneficial use in agriculture, it is used for mapping yields, variable rate planting, variable rate lime and fertilizer application, field mapping for records and insurance purposes among other uses.
