Answer:
3: A device that uses radioactive fluid to determine the active areas of the brain
Explanation:
A positron emission tomography (PET) scan is an imaging test that helps reveal how your tissues and organs are functioning. A PET scan uses a radioactive drug (tracer) to show this activity. This scan can sometimes detect disease before it shows up on other imaging tests.
Depending on the type of exam, the radiotracer is injected, swallowed or inhaled as a gas. It eventually accumulates in the area of the body under examination. A special camera or imaging device detects radioactive emissions from the radiotracer. The camera or device produces pictures and provides molecular information.
Answer:
Small scale convergence
Explanation:
This term in meteorology occurs in a convergence zone; a region in the atmosphere where two air flows meet and interact, usually resulting in major weather conditions. A Small-scale convergence will produce situations ranging from isolated cumulus clouds to large areas of thunderstorms.
The answer is seasonal changes.
<span>Animals that live in taiga biomes had to adapt to seasonal changes, by changing
their fur or feather color. For example, snowshoe rabbit and arctic fox live in
taiga and their fur color changes with environmental conditions.
To effectively camouflage, their fur is white during the winter. That
helps them blend into the snow. In the summer, where there is no snow, their
fur is brown and similar to the soil color. This way they evade predators because it is more
difficult for their predators to spot them.</span>
Answer:Carbon dioxide molecules
Explanation:
B. are trying to use the same resources
