Answer:
There is no actual way that the mantle could be...'exposed' or 'seen'. But scientists have managed to find multiple ways to analyze the mantle and it's actual existence by using multiple devices. The mantle is basically a 2,900 kilometers (1,802 miles) thick blocks of rocks and minerals underneath the crust(or the surface of the earth) , and makes up a whopping 84% of Earth's total volume.
Answer:
A. carbon dioxide molecules C. glucose molecules
Explanation:
Answer:
When it stands the test of time and is supported by many experiments.
Answer: (c) seed type
Explanation:
An independent variable is the one which can be altered or manually manipulated in an experiment. The effect of such manipulation can be examined on the dependent variable of the experiment. The dependent variable cannot be manipulated in an experiment instead it is the outcome of the experiment.
The seed type is the correct answer because the seed type can vary and the effect of which can be examined on the seed germination process and rate of seed germination.
