Answer: Hot air is less dense than cool air; the heated air causes the balloon to rise simply because it is lighter than an equal volume of cold air. Buoyancy is an upward force that the air exerts, and it helps hot-air balloons and blimps stay in the air. A hot air balloon uses a burner to heat up the air inside the balloon.
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Answer:
the difference is:
Plant cells have a cell wall, large central vacuole, and chloroplasts, while animal cells do not.
Explanation:
Biology 101
One result is that the ovaries would be unable to produce oocytes (eggs) for fertilization hence the woman would be unable to conceive. Another is that the woman would have an abnormal menstrual cycle due to abnormalities in the production of estrogen and progesterone by the ovary.
It is known as projecting. Data retrieval means obtaining data from a database management system such as ODBMS. In this case, it is considered that data is represented in a structured way, and there is no ambiguity in data. In order to retrieve the desired data the user present a set of criteria by a query. Project management information system are system tools and techniques used in project management to deliver information. Project managers use the techniques and tools to collect, combine and distribute information through electronic manual means.
