Scientists have discovered a new specimen. It is microscopic yet complex, and scientists are having a hard time figuring out if it can be classified as a living thing or not. So far, scientists have observed some key things about the specimen. It performs photosynthesis, and since they have been watching, it has doubled in size. In fact, the scientists were able to retain one in the laboratory, and now they have four. The specimen has been kept in a petri dish in the lab; throughout the day, scientists observe it in different areas of the dish. Do you think the specimen is a living thing? Based on what you know about what makes a living thing, make your argument. Also include any observations that could be made that would make your argument even stronger.

Several processes form metal ore. match each process to its description. volcanic activity weathering hydrothermal energy rocks break down as they interact with air and water. arrowright density differences and other factors cause metals to concentrate in igneous rocks. arrowright seawater heats up from contact with hot rock, and metals dissolve in it. the water rises and contacts cooler water, causing metal ores to settle on the ocean floor. arrowright

Researchers conducted an experiment to identify the effects of three different hand sanitizers on the growth of bacteria. the researchers grew one type of bacteria in twenty-four identical covered petri dishes. then, they opened eighteen petri dishes and applied the three hand sanitizers to six petri dishes each. they left the remaining six petri dishes closed as a control group. when the researchers measured the growth of bacteria two days later, the six dishes that had no hand sanitizer showed the least amount of bacterial growth. the researchers concluded that not using any hand sanitizer would lead to the least bacterial growth. which statement best explains why the researchers’ conclusion was not justified? the experiment tested too many variables. the control group was not treated the same as the experimental group. the sample size of twenty-four petri dishes is not large enough. the single type of bacteria is not adequate to make any conclusions.

Consider an air-filled charged capacitor. how can its capacitance be increased?