The gently sloping submerged surface extending from the shoreline toward the deep ocean is called the : continental shelf
you can identify it by spotting the area around a land mass where the sea is relatively shallow compared to the open ocean.
Chemical. This process is not done physically.
Answer:
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Explanation:
Metamorphic rocks started out as some other type of rock, but have been substantially changed from their original igneous, sedimentary, or earlier metamorphic form. Metamorphic rocks form when rocks are subjected to high heat, high pressure, hot mineral-rich fluids or, more commonly, some combination of these factors
Answer:
d. Both species are kept well below their carrying capacities by predators.
Explanation:
<em>According to the competitive exclusion principle, two organisms in competition cannot co-exist in the long run.</em> One of the organisms will eventually out-compete the other and the weaker organism will eventually die off due to lack of resources or relocate to another environment.
However, when both species in competition are kept well below their carrying capacities by predators or any other environmental factor, both of them can co-exist because there will be more than enough resources due to low population.
The correct option is d.
REM sleep (Rapid eye movement sleep) refers to a specific phase of sleep in birds and mammalsm differentiated by brisk movement of the eyes, followed with slow muscle tone all through the body.
The control over REM sleep includes pathways of REM-on and REM-off neurons in the brain. The REM-on neurons are mainly cholinergic, that is, involve acetylcholine. The REM-off neurons stimulate noradrenaline and serotonin that among other activities suppress the REM-on neurons.
It has been suggested that the REM-on neurons basically activate REM-off neurons, thus, functioning as the mechanism for the cycling between non-REM and REM sleep.
The REM-on neurons are located inside the sublateral dorsal nucleus, while the REM-off neurons are located inside the ventrolateral periaquaductal grey.