There are multiple reasons why and MRI scan as a diagnostic tool can be considered inappropriate. The primary reason other diagnostics are used over MRI is because of cost-effectivity. The MRI scan is considerably more expensive compared to x-rays and CT scans. It would be inappropriate to ask for an MRI when the symptoms point to a simple bone fracture of the leg for example. An x-ray can give you the same amount of information in this regard without the huge cost of an MRI.
Another example would be if the patient is claustrophobic. Taking an MRI scan takes a long time and it would involve inserting the patient in a coffin-like machine. Getting an image would be impossible because the patient would need to hold still for a span of 40 minutes to 1 hour.
Answer: A constellation
Explanation:
A group of stars is a constellation. The Hubble Deep Field is an image of a small region in the constellation Ursa Major, constructed from a series of observations by the Hubble Space Telescope.
Answer:
This process would be the one truly responsible for the "evolution" of mitochondria and chloroplasts as we know them from their prokaryotic ancestors. The cell process that would have initiated endosymbiosis is endocytosis; the process of taking things inside the cell
Correct answer choice is:
D) Elements continuously cycle between the physical environment and living organisms.
Explanation:
Any nonliving matter that living things want is termed a nutrient. Carbon and nitrogen are parts of nutrients. Unlike energy, the object is converted into ecosystems. Decomposers deliver nutrients when they cut down dead organisms. When one organism eats a different organism, it takes all of its nutrients. Nutrients can also cycle out of an ecosystem. Falling leaves may be moved out of an ecosystem by a water. Decomposers cut down dead organisms into nutrients and carbon dioxide, which they respire into the air.