Answer:
An experiment that directly test the hypothesis.
Explanation:
Although there is quite a bit missing from Mary's scientific investigation, the thing that sticks out the most is the fact that Mary is missing an experiment. Mary's hypothesis states that people would fall asleep faster if their room color were to be painted blue. To prove that her hypothesis is true, Mary would need to conduct an experiment to see whether or not she was correct.
Answer: C
Explanation In any of the answer choices doesn't say tat its possible copper to conduct electricity. But in C its says it can exchange electricity.
Answer:
Nitrate is the form of nitrogen most used by plants for growth and development. Nitrate is the form that can most easily be lost to groundwater. Ammonium taken in by plants is used directly in proteins. This form is not lost as easily from the soil
Answer:
reptiles
Explanation:
the reptiles is my favorite
The heart has 4 chambers, 2 upper chambers and 2 lower chambers. Blood passes through a valve before leaving each chamber of the heart.
